I'll eat any portion of a llama someone cares to send me if gparted won't fix your drive.
GParted -- Download Burn that to a CD, boot onto it, adjust the partition table.
Actually, if you're going to be burning something, might as well make an Ultimate Boot CD, and use the formatting/partitioning tools on that instead.
http://www.ultimatebootcd.com/
This is all assuming there isn't a handy windows utility that will handle partition table editing...I don't know of one, but would be VERY surprised to find one doesn't exist.