Hi Michael,
This may not be the answer you're looking for.But unless you are 100% sure what you are doing,this is a job for a professional.The timing belt and tensioners on any car is a major component and not just like replacing a fan belt.Get it wrong and you'll be looking at an engine re build costing you Hundreds!!.I'm handy around cars,but it's a job I wouldn't tackle.If cost is an issue,try buying the parts from any auto spares,and see if you can get a mechanic to fit on his day off "Cash in hand" :-)
Ma6ician
October 2008