HD: Full capacity not recognized

Hello all, I recently was taking linux off of my only hard drive. I used gparted to remove the partitions, and the linux and linux swap partitions were deleted. However, the ntfs partition (the one with Windows XP on it) was not resized. I guess ntfs is more picky, and if you haven't shut down you computer correctly, gparted can't do anything to it until you reboot twice. So, the two linux partitions were deleted, but the ntfs wasn't resized. Then, I used my windows xp cd's recovery console to fix the mbr. Once I was back in windows, I rebooted twice, and then started gparted again. Now though, my hard drive shows up as having only the capacity of the windows partition. The ~50 gb from the linux partitions don't even show up as part of the hard disk. How can I fix this?