anyone know how to change timing belts?

Yes. You need to buy a manual and do a search on this site for more info. You will also need a heavy duty tool to get the pulley dampner nut off.

Here are the parts you should have to do the job right.

http://www.automotiveforums.com/vbulletin/showthread.php?t=325191&highlight=timing+belt

# 4,5 & 9 you don't really have to install but it's your gamble if they go later on.