Can't install 7.5, going crazy.

Question

This is very frustrating, I've been at it for a couple of days.
Clicked to automatically upgrade Itunes. Downloaded and seemed to install fine. When I clicked on Itunes, I get an hourglass for about 2 seconds, then it dissapears. Nothing happens. Quicktime opens fine.
I uninstalled, erased files, used windows clean up utitility, reinstalled, nothing changed.
I did everything here:
http://docs.info.apple.com/article.html?artnum=93698
No luck.
I found this post, and did everything, and still nothing:
Got it to work after spending almost the entire weekend messing about with install combinations: this is what work for me when my ipod Touch was not recognised due to "required software" not being installed...
1) uninstall everything (i mean any iTunes or Quicktimes) fully including checking with the windows install cleanup utility
2)restart your computer
3) Unpackage the iTunes 7.5 bundle in a folder onto the desktop, using WinRar
4) Install other components before the iTunes itself...
i ran QuickTime.msi, and then AppleSoftwareUpdate.msi, then AppleMobileDeviceSupport.msi (i don't think the order matters and im not going to
try other combinations as it's working for me!)
5) then run iTunes.msi
6) and after finishing, it started and recognised my iPod touch
hope this actually helps someone, as i've been reading these sites for hours.
good luck
Message was edited by: Lethal_Louis
I'm not sure what to do. At this point I'm just going in circles. I'd like to get access to my music and use my ipod again.
In short, recurring symptoms: Click on itunes, get hourglass, nothing happens.
Oh and I tried installing an older version of Itunes I had.
Any help/suggestions? I'm going crazy.
Thanks for any help.

Answer 1

I've been fighting the same battle the past 2 days, but when I followed these numbered directions above I thought it would work. Wrong, it still said "A later version of iTunes is already installed. Installation of this version cannot continue".
One of the things I noted on the iTunes support page is that VBscript must be installed, and I thought I had it since I have the file: (C:\windows\system32\vbscript.dll).
Anyway, I downloaded VBscript 5.7 from the Microsoft web site, ran the installation, rebooted, and tried reinstalling just the iTunes.msi as described in step 5 since I'd already installed the other components. The install worked this time. I was flabbergasted! Trust me on this, I must have spent 10-12 hours trying everything to uninstall old components, clean up files & directories, and remove all possible registry entries manually, and I could not get past the error message saying I already had a newer version. Only after installing VBscript was I able to get iTunes installed and running!
It is extraordinarily frustrating to have to spend so much time and effort to run a simple software install that should have taken 10 minutes. The developers who thought it was a good idea requiring VBscript be installed on the host machine ought to flogged!