If you are asking this question, you have no business attempting this task. I don't mean to sound like a jerk, but you should really not have this type of question if you know what you are doing. Timing belts are not like oil changes. There is a certain procedure you need to follow to time up the engine, route the belts, etc. A Helms or similar manual will have the procedure, and this is a black and white situation. If it's done right, it works, and if not, trouble. I assume you already have the engine torn appart. My suggestion is if you can't have a qualified technician come out to where your car is, have it towed to a reputable garage. I don't mean you should take it to a dealer, but definitely someone who is familiar with this job.