How can I add GeShi code boxes to my wiki

Hello, My Wiki is http://wcsource.pbwiki.com and is a wiki to help users programme in my programming language I created for a game in python. Now I want to add code boxes, preferably with syntax highlighting with GeShi or something similar to show my python code in a code box with coloured syntax.

I have googled and searched but I have not encountered anything of the sort, I'm wondering if there is anything similar to what I wish for? If this is possible can you tell me how to do it; if not, is It possible to implement this for the future?

Thank you in advance

-freddukes