I hope you did not removed the belt yet. If you post an e-mail I can send you info, but on the cams and the crank sprocket has a mark at 12 o'clock position. You need to align the marks BEFORE you remove the belt.
If it's broken, you are looking at a lot more then a belt replacement because unfortunately this is an interference engine, which means the pistons will hit the valves. This repair requires to remove the cylinder head, replace valves, etc... I hope it didn't happen, but just in case, you can find great repair manuals with step-by-step instructions, diagrams, parts locations and other important information here: http://www.eautorepair.net/Marketing/Default.asp?VID=125669