http://gparted.sourceforge.net/livecd.php I used this the other day to expand the partition on the hard drive on a laptop before we bumped it to Vista..
Holz in the newsgroups had a great document on it….like he said DO A BACKUP FIRST..this is NOT supported and if you get in a pickle you are on your own. HAVE A BACKUP FIRST
Gparted The link below is to a document I wrote to help people planning a migration and need to use gparted. It will help you to. My e-mailis on the bottom of the doc, so let me know if yo need help. Please, please, please, do not be an idiot, do a BACKUP first. http://www.woodcontour.com/images/upg.pdf