ITunes 7.3.1 does not work

Question

I have had no issues with any version of iTunes. I have upgraded to the latest version. Now, every time I try to launch iTunes, Windows XP states an issue has been encountered and the application has shut down. This is all the information that is given:
AppName: itunes.exe AppVer: 7.3.1.3 ModName: unknown
ModVer: 0.0.0.0 Offset: 10001040
I un-installed iTunes and Quick Time. I removed all registry entries related to iTunes/Quick Time. I re-installed iTunes. Still same deal. iTunes won't start up.

Answer 1

AppName: itunes.exe AppVer: 7.3.1.3 ModName: unknown
ModVer: 0.0.0.0 Offset: 10001040
That one usually indicates a problem with your QuickTime. Let's try swapping it out one more time, taking a few additional explicit precautions this time.
head into your Add/Remove programs. uninstall QuickTime.
Next, we’ll manually remove any leftover program files and folders.
1. On the Start menu, click My Computer (or double-click My Computer on the Desktop).
2. In My Computer, open Local Disk.
3. Open Program Files.
4. Right-click on the QuickTime folder and click Delete from the shortcut menu.
5. Navigate to C:\Windows\system32\.
6. Remove the files QuickTime.qts and QuicktimeVR.qtx.
7. Restart your computer.
next, we'll get a fresh copy of QuickTime into your PC by doing a repair install of itunes.
switch off antivirus and antispyware applications prior to the repair install.
go into Add/Remove and select itunes. click "Change" and then click "Repair".
if the repair install goes through okay, restart the PC and try launching itunes again. does it launch properly now?