How do you make something sound like a chipmunk on windows movie maker?

I was wondering how I could make myself sound like a chimpunk on windows movie maker, well kind of like speeding up the sound or something. Thanks :)How do you make something sound like a chipmunk on windows movie maker?
You can't make it chipmunk on WMM unless you speed up the video too, but go to add effects, and scroll through it until you find speed up,double. You can also try slow down,half to make it slo mo.