I've been trying to install itunes on windows 7 but apple mobile device will not install

Question

I've finally managed to narrow the problem down to the following file:
C:\Users\xxxxx\AppData\Local\Temp\Rar$DIa0.119\AppleMobileDeviceSupport64.msi: The archive is corrupt
this is the file delivered with itunes and it's definitely causing the problem because when I try to install one I downloaded from
http://www.javakrypt.com/itunes/
it installed ok, however when I try to run itunes the amd driver is installed the ipod connects but itunes has a version issue with the AMD driver and asks for a reinstallation of itunes.
My question to apple is where can I download an incorrupted AppleMobileDeviceSupport64.msi file for the latest release of itunes, and can you pleas everify that the version you are deploying with the current version is not corrupted.(The first file I see when I extract the MSI file has a random character file name with no modified date and a size of 16640. WInrar refuses to extract any files from the msi file.
I believe many people are having this problem and if they can get this file it may their problem as well.

Answer 1

OK I've fixed the problem and my thanks go to redmars.com.au (link below plus copy of solution)
http://www.redmars.com.au/blog/itsupport/327
To summarise what I did I
0. the pnputil -e uninstallation didn't work for me so 
1. modified the permissions on the C:\Windows\System32\DriverStore\FileRepository\netaapl64.inf_amd64_neutral_hexidecidforyourcomputer folder so that I could access it
2. I deleted the files in this folder
3. Retried the install from command line with log file enabled but it still rolled back, but in the log file I noted it wasn't finding the netaapI64 files and when I checked the above folder these files were missing.
4. I tried copying the files from the msi file using winrar but this failed passing a file corrupted error message and files copied had a zero byte size (i.e. empty)
5. I copied the files from a friends folder who didn't have this problem files are (netaapI64.cat, netaapI64.inf, netaapI64.PNF, netaapI64.sys and wdfcoinstaller01009.dll)
6. retried the install from the command line and it worked. Started itunes connected itouch, it installed the drivers and the itouch appeared in itunes.
I can now access my ipod from itunes.
The only problem now you face now is how to get the uncorrupted files detailed above. Does anyone have a solution to this? Winrar states files are corrupted. but they obviously aren't otherwis ethe installation wouldn't work.
text for solution here follows :
I recently came across a problem on a Windows 7 64bit laptop where Apple's iTunes was failing to recognise a connected iPhone. It was giving a error that the wrong version of iTunes was installed and I should install the 64bit version of iTunes. As I had no idea how what had been performed up until this point I performed a full uninstall of iTunes. I then downloaded the latest version of iTunes 10.5.1 and ran through the installer. At one point during the install I noticed the install gave the message 'Rolling back action' and thought to myself this cannot be good.
At the end iTunes indicated it had a problem installing and I should try again. The weird thing is if you didn't pay attention to the message you could quite easily click on ok and iTunes will work except it'll fail to recognise any iPod, iPhone or iPad device. To help identify what actually failed to install I checked the windows services management console and found the Apple Mobile Device Service was missing. This makes sense because it's that service which communicates with the iPhone. The question is why was the Apple Mobile Device Service (AMDS) failing to install?
To find out I needed to capture a log file of the install process. A bit of research helped me identify that the iTunes64Setup.exe contained 5 separate windows installer files:
AppleApplicationSupport.msi
AppleMobileDeviceSupport64.msi
AppleSoftwareUpdate.msi
Bonjour64.msi
iTunes64.msi
I needed to extract AppleMobileDeviceSupport64.msi from iTunes64Setup.exe so I could generate a install log. The solution is to install WinRAR which you can download here http://rarlab.com/download.htm. After extracting AppleMobileDeviceSupport64.msi to c:\temp (you can use any folder you like here) I opened a command prompt and issued these commands:
cd c:\temp
msiexec -i AppleMobileDeviceSupport64.msi -log AMDS.log
This will attempt to install the AMDS and generate an installation log c:\temp\AMDS.log. Looking through the log I found the install failed because the format of C:\Windows\System32\DriverStore\FileRepository\netaapl64.inf_amd64_neutral_dc2c bd989eec1514\netaapl64.inf was invalid. I opened the file in question and found it to be completely blank. I coulnd't just delete the files in question because they are protected by the Windows operating system, and anyway the correct method to remove a driver package from the driver store is to use the pnputil.exe tool. However if the driver package didn't complete installation in the first place then it may not work, but it was always worth a try.
To use pnputil I needed to run a command prompt as an administrator. I Clicked Start, All Programs, and Accessories, then right-click Command Prompt, and then click Run as Administrator. From the command prompt type I typed in pnputil.exe -e. This produced a list of installed driver packages. Looking through the list I was looking for something like this:
Published name :            oem30.inf  Driver package provider :   Apple  Class :                     Network adapters  Driver date and version :   07/12/2011 1.8.4.2  Signer name :               Microsoft Windows Hardware Compatibility Publisher
This is the Apple network adapter driver. The important information here is the Published name oem30.inf. To uninstall the driver use the command pnputil -d oem30.inf (replace oem30.inf with the correct published name for your PC). After this try and the install again: msiexec -i AppleMobileDeviceSupport64.msi -log AMDS.log. If this fails or as in my case the driver package doesn't show in the list of installed drivers you'll need to take more drastic (and potentially dangerous to your PC's health!) measures.
By default the files in the driver repository are read only and can only be modified by the Windows Operating System, and this is for a good reason. I needed to change the permissions on the driver package so I could delete the corrupt files. Caution proceed at your own risk, make a mistake here and your computer may stop working and a system restore or rebuild may be required.
The first thing I needed to do was to take ownership of the folder so I could change the permissions. From windows explorer I clicked on Folder and search options under the organize button. Next I clicked the view tab and clicked on Show hidden files, folders, and drives. By unticking hide extensions for known file types and unticking Hide protected operating system files I was able to view the files I needed to remove. From the windows explorer window I browsed to browse to C:\Windows\System32\DriverStore\FileRepository\, which was now visible and right clicked the netaapl64.inf_amd64_neutral_dc2cbd989eec1514 folder and selected properties. I clicked the security tab and then the Advanced button. Under Advanced I clicked the Owner tab and then clicked the Edit button. From the change owner to: box I selected my username, and then ticked Replace owner on subcontainers and objects and clicked OK to set the changes.
Next I gave myself Full Control to the folder and files. Back on the Security tab I clicked the Edit button, and with Everyone highlighted in the Groups or user names I ticked full control in the Allow column. I clicked OK and accepted the warning message Windows presents about security and access problems. At this point I could delete the contents of the netaapl64.inf_amd64_neutral_dc2cbd989eec1514 folder.
I tried re-installing the Apple Mobile Device Service (AMDS) using msiexec -i AppleMobileDeviceSupport64.msi -log AMDS.log command and I no longer got the Rolling back action error. All that I had left to do now was install iTunes again and the iPhone was now recognized when I connected it to the PC.