Duff-Man says...okay, if you've booted from the cd and you see your hard drive on the desktop, there's a few things you can do - look in the applications dir and find the folder for the program you installed and then see if it made a log file which will tell you all the files it put and where it put them - then delete them. Or try launching the installer again - there may be an "uninstall" option. Also try running disk utility and checking your drive for errors and repairing permissions.....oh yeah!