Problem with uninstallation.

Well, i finally did it! I switched to Vista. Shortly after doing so i did something even worse, moved a program, deleted everything in the folder and then removed it from the recycling bin >.<

So, first off. This program was Guitar Hero III. I insalled this to my C:\ drive without realizing it wasn't on my D:\ drive. So, i switched it from C:\Program Fles\Aspyr\Guitar Hero III to D:\ProgramFiles\Aspyr\Guitar Hero III. I know i know, this was a big no no. After that the game didn't work, so i deleted it all and trashed the recycling bin. I tried to reinstall the game, however it said that the directory to find the Guitar Hero III executable file is not available and doesn't do anything else. I tried repair and remove in both the cd and Add\Remove programs. They both fail.

What do i do?!