Ok, don't worry about upgrading your instruments, just go download FL studio and learn how to use it, assuming you don't have it yet. The demo version works just like the real version only you can't save, but you can export as many mp3s as you want and there is no time limit on it, so you can really get to know it before spending any money on it. One recommendation though, don't close it if you aren't finished with your project.
I don't have FL Studio, but unless I'm misunderstanding you, that wouldn't help. It's not that I don't have a good program to create music with - I use Sonar Home Studio. It's that I need higher quality instruments. I doubt FL Studio would come packaged with better instruments than I have now (but I may be wrong). I'm guessing I'd be better off upgrading to a Mac and getting Logic.
Anyways, thanks for the input!