Yeah that's a tough thing. Here is a video that shows you how to change your primary drive belt. (The music ain't great, but that isn't why we watch the video.)
I also have a page dedicated to how to change your belt drive. That page can be located here.
And if you're interested in converting your belt to a chain here is where you can purchase that kit:
SUR-RON LBX PRIMARY TRANSMISSION CHAIN CONVERSION KIT