I really didn't mean to kick this off ;)
Original poster: instead of the GUI programm, I recommend you try
cfdisk. It's not "graphical", but it has a nice UI, and it can do
everything you need. sudo cfdisk /dev/device and you're
going to be much happier.
 .''`.   martin f. krafft <madduck@d.o> @martinkrafft  
: :'  :  proud Debian developer  
`. `'`   http://people.debian.org/~madduck  
  `-  Debian - when you have better things to do than fixing systems  
 
"the question of whether computers can think  
 is like the question of whether submarines can swim."  
                                               -- edsgar w. dijkstra