Overclocking a netbook?

Hi, I have a Toshiba netbook. I would very much like to eek out as much performance as possible from the little thing so I can play a little Starcraft 2 in my free time. As it is, it can run the game alright, but it slows down when it gets to some of the bigger battles in the game. Can anyone help me with this?

Specs-
Amd K325 1.3ghz dual core
4 gigs ddr3
ati 4225 graphics

if heat is of any issue, I typically use the netbook with a cooling pad when doing gaming.