Change Channels?

[kwebservices]

I have a logo that I like, but I can't figure out how to change the colors of it. I tried to go to the channels where I saw RGB, Red, Green, and Blue channels. Is it possible to change these channels, thereby changing the colors? Please help. Thanks!

 

[Nomission]

try Menu Image->adjustment->hue and saturation.
In PS CS4 or CS3, you can create an hue/saturation adjustment layer, thus not destroying the original picture.