How do you line up timing belt?

Honestly, if you need to ask, you need to make sure this is a project you can tackle.

Typically, there will be 'marks' on the pulleys and cylinder head(s) to help you. They can vary, usually there is a little tab and a 'hatch' mark on it that lines up with a mark on a pully. Some cars just have just a couple of holes that are alinged before you tension the new belt. It depends on the manufacturer. You really need to consult a service manual to make sure you do it right.

This link can help you get an idea of what you are in for:http://www.vfaq.com/mods/timingbelt-2G.HTML