<< allright...now we're getting somewhere....
did you install it originally? did you fdisk and format it originally (back when it was running fine as a 15 gb drive)?
there's no easy way out of this...you have to go back into fdisk and re-create it. software such as partition magic might allow you to increase you're partition size w/out re-installing, but unless you own that software, you're kinda stuck. >>
i just remembered that when my friend installed installed in 2 years ago, that we had the same problem. i dont remember how he fixed it, id ask him, but hes not online right now, and i dont know his email address.