Hey guys I'm sorry for the newbie question but here goes.

I bought a used 2g iphone and before the guy gave it to me he did a factory reset "for me". So I have a 2g running on 3.1.3(7e18) and the modem firmware is 04.05.05_g. I want to jailbreak and unlock. It seems all the posts I see are on 3g or 3gs. Is there any thing I need to do different or in this case is the 2g the same as the other 2?