Chris,
Sorry, I'm not a programmer, just a lowly computer tech with his own business.
My advice to you would be:
a. back up all your data
b. wipe the drive and start over with a legitimate Windows cd (sounds like you might have to buy one)
c. get that removable drive bay I recommended + another hard drive (unless you want to use your second drive instead)
Now you can do all the things you want & not have to worry about losing data.
Oh, another thing. Get Acronis True Image (newegg.com). Make an image to some other place as M$ is a real punk when it comes to multiple installs in a short period of time.
Good luck!
Alan <>< :-)