CS3: How do I change a colour?

[swag72]

In CS3 I have got a picture where I want to change one colour to a graduated different colour - Can anyone tell me in total idiot terms how I can do this?

Thanks

 

[JasonRS]

Try this for a quick hit

http://videos.howstuffworks.com/xtrain/4819-color-change-in-photoshop-cs3-ben-willmore-video.htm