But if you have XP (no SP1 in the original install) DO NOT EXPAND IT PAST 127GB. Why is well documented. Be sure to backup before you do this if you don't believe and even if you do. Now go get GPARTED and expand it.
I have a hard drive with a C partition and a partition of unalocted area. In Windows XP how can I expand(extend) the C partition to utilize the unalocated area?