[ubuntu] Resize windows partition?

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http://ubuntuforums.org – Hello! Just Formatted the entire HD and put Windows 7 in a 20 gb partition and ubuntu in a 280 one.but then i realized that the windows' one was Way too small and i had to put at least 20 more gb.i burned gparted on a disk,but here's the problem: There are 5 partitions,2 from windows and 3 from ubuntu,And the ubuntu ones are in a "group" and i cant manage to make the allocated space get out of there....Help? Thanks (Hardware)