Heres a link to another thread with some info on it. Might help you out, might not. The last post is what I came up with on my old r
http://www.blasterforum.com/pics-vids-9/my-latest-creation-not-quite-finished-22354/index4.html
http://www.blasterforum.com/pics-vids-9/my-latest-creation-not-quite-finished-22354/index4.html