ITunes wont open - Quicktime issue

Ive tryed to reinstall itunes at least half a dozen times now and nothing will fix this issue. If i try to open itunes, the process (in task manager) starts but gets to about 38000K then nothing, never opens no matter how long i wait. Im unable to end this process either, so it just sits there taking up memory. Following the advice of someone else in another thread i tryed changing the compatability of quicktime and itunes to windows 2000 and this gave me the error message that "quicktime is required to run itunes" despite the fact that i do have it installed. Reinstalling both itunes and quicktime have no effect on the problem, does anyone have any ideas?

Hello BaconSquishy.
First thing I would do is turn compatibility mode off if you have it on for iTunes and Quicktime. As this will not really fix anything except under rare and special conditions.
Next thing I would do is Basic uninstall in the following order. And installation in the following order. If this does not work proceed to last link below for assistance.
Uninstall the following Apple Applications in the following order.
Launch Control Panel and open Add/Remove Programs or Programs and features if you have Vista.
-Apple Mobile Device Support
-Apple Software Update
-Bonjour
-Windows iPod Updater (Name might be different but look for anything with the word iPod)
-MobileME Control Panel
-Quicktime
-iTunes
*Now reboot the computer
-Download and install Quicktime Standalone. There will be 2 options. Click the Quicktime Standalone
http://www.apple.com/quicktime/download/
-Download and install iTunes once Quicktime is installed
http://www.apple.com/itunes/download/
*Launch iTunes. Depending on the speed of your machine. Give it 4 min tops to load. Should not take that long. Pay close attention to fire wall alert messages as they might be looking for approval to launch the App.
*If you still can not launch it check the link below
Trouble installing iTunes or QuickTime for Windows
http://support.apple.com/kb/HT1926?viewlocale=en_US

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