What you are after is to EXPAND the size of the partition. Microsoft has no non-destruction tools to do this.
Here's a thought. At 2GB it's like a NEW INSTALL. Why not start over and do it right this time?
Here is my situation. I have a user that installed XP on his home machine. Without knowing he used FAT as the file system and it is now only recognizing the hard drive as being 2GB.
I have run the Convert command in XP and converted the drive to NTFS, but XP still sees it as a 2GB drive.
Is there a step I missed or do I have to just reinstall XP using NTFS to be able to see the full drive?