How can i make my bootcamp partition larger?

[equalsabracket]

I have a 50GB windows partition through bootcamp. The problem with it is that it's too small and i constantly have to uninstall games to put new ones on. How can i re-size it without backing up all my saved games, removing the partition and making a new one?

 

[SilentPanda]

I had good luck with WinClone. Just make sure you read the instructions and such so you don't botch it up on accident.