Folks,
I finally found resolution to my inability to uninstall Quicktime for Windows version 7.04 so I could downgrade to the more successful version 7.03. The final key was a post in another forum on manually uninstalling quicktime:
http://forum.worldstart.com/printthread.php?t=65812
It listed a number of directories to check after I ran, what appeared to be, a successful uninstall. After manually deleting a number of files and directories left behind, I could run the 7.03 installer without seeing "a newer version of Quicktime is installed."
I hope this helps. I updated my web page on this frustrating problem also.
Paul
Dell 600SC Windows XP Pro