Thank you for your reply, but do I need to reformat it before I partition it or not? I was thinking about backing up everything on another drive and formating on a mac and then, it would be cross platform ready. I've done this once before, but I don't have another 500Gig external to backup the 300Gig info that I have on there. I am looking for a way that I don't have to erase and reinstall... :(
I forgot to mention its set to work on a 64bit windows and I guess I have to change it to 32bit....