recovering from C:/documents and settings/dd/

I recently had a hard drive just die on me, so I got a new one, installed windows on it, and connected the old one to my new one to pull my files off.  I've gotten most of my files off, except for the ones in the "documents and settings" folder.  Like my firefox bookmarks.  I can't get my old hard drive to boot up anymore.  Anybody happen to know how to get through the "access denied" thing of "C:/documents and settings/username/"?

Is it possible to convert to FAT32? I thought the conversion was only one way.