Hello psychoward,
Thanks for using the Microsoft Answers Forum.
You might try using the Windows installer Cleanup Utility to remove any remnants of software that has been installed on your computer. This program is designed to remove failed installations and software that is otherwise hard to remove.
Windows Installer Cleanup Utility
http://support.microsoft.com/kb/290301
Let us know if you need additional help with this issue or if you are unable to download the software.
Judd
Microsoft Answers Support Engineer Visit our Microsoft Answers Feedback Forum and let us know what you think.