Ok, there is one problem I forgot to mention. When you set your time back and leave it. You computer goes nuts trying to update and your Norton will think it is expired. If you don't want anything to do with that then I can get you FL Studio 5 with no strings attached. When you have FL5 installed along with the newest FL7, you use the newer instruments from FL7 too.
FL Studio 5 only requires a regedit(happens automatically) and a file to be replaced in the FL folder. It includes the readme file for install instructions as with almost any cracked prog.