Avatar help?!

I tried changing my avatar but the one I want is too big in terms of pixels. How do I shrink it down to 150x150?

Try this

http://www.picresize.com/

that ones shite use this one its easier

http://www.resizeyourimage.com/

this one does it properly... honestly this time

http://www.image-resizer.co.uk/

open it up in paint, click resize image, put in 150 px x 150 px and save it.

Done and dusted.