You need the "1980-1 Parts Catalog", which is a white and red cover. It lists the game specific parts and also the generic parts.
Which can be downloaded/viewed for free here;
http://www.planetarypinball.com/mm5/merchant.mvc?Store_Code=PP&Screen=BOOK
Thanks Peter, thats an excellent resourse, I wish I'd discovered this before I'd spent 3hrs on the computer trying to id items!
Anyway I'm sure one I get started I'll still have plenty of questions to ask everyone, so get use to seeing lots of posts starting with "Help"