Well I thought I wrote about this already but in fact I didn´t – anyway – if you´re looking for a kick ass partition manager / editor then be sure to check out the gParted Live CD.
It´s open source and therefore available for free at : http://gparted.sourceforge.net/.
If you need to do anything with your partition(s) – resize, move, delete, format, manually edit MBR and other crazy shit gParted Live CD is your choice. It boots directly from the CD, can also be adjusted to boot from a usb device and performs any desired action with your partitions.