[other] Partition help

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http://ubuntuforums.org – I don't know if this is the right forum, but I will ask anyway. I made a seperate partition from my C: drive that was 15 gb for ubuntu and kept my C drive for windows, thinking I could just use that while in linux to play my games. I am asking if I can make my ubuntu partition bigger (as I have made 100 gb of free space to do so), or if that is not possible, to just copy the ubuntu folder in that partition, delete that partition, then make a bigger partition, and then paste the folder in the new partition. Would this work at all? Please help me. This is really hard... :p (Hardware)