I used to have either windows 98 or XP I forget, but it doesnt work in Windows 7, had it installed, but wldnt load right mixer was blank, so I deleted it. Now Im trying to reload, not recognizing my serial number, and saying a version of cakewalk is still running on ur puter, ect ect....yet theres no listed cakewalk program to uninstall. Please help me Ive got tunes to record and am stuck!!!

Unfortunately, many older programs don't work with the newer operating systems, something most of us have experienced.
If it's a 64-bit OS and if GT 2 doesn't have a 64-bit version to install, make sure th 32-bit version installs in the Program Files (X86) folder.
You can try right-clicking the GT 2 icon, select Troubleshoot Compatibility and see what happens.
Also set it to Run As Administrator.
Or upgrade to the latest Win 7-compatible software.

I think you'll need to upgrade to Guitar Tracks 4