That's when a dynamic query comes handy. I don't have time right now, but this article should help you to get there based on the static sample I posted: http://www.sqlservercentral.com/articles/Crosstab/65048/
Luis C.
General Disclaimer:
Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?
How to post data/code on a forum to get the best help: Option 1 / Option 2