I don't have all of my w2's for 2006 and 2007. How can I get them?

Well for 2007 the places you work should have just mailed them to you by Jan 31. So you should have them. If not, contact the places you worked ans ask them about it.

For 2006, you will just have to contact the company you worked for and ask for that information.

Other than what Chuck said there is no other way to obtain the missing W-2's. The ones from 2006 might take your former employer time to get for you from their accountant.

Agreed.