I am looking to get my first laptop (im only 15, need one for school anyways) and I really want something that could play Fallout 3, Oblivion and maybe New Vegas (depending on if it is more demanding). Something between $200-$350 if possible. It doesnt need to be a nice gaming laptop but just something that can play a couple games and run them smoothly.

I can look online for used or something also, just give me some specs for something cheap, im not much of a computer person so i dont really know what im talking about.

You arent going to get anything for $350, if it must be a laptop, I suggest you save up until atleast $650 or so to run games on it. Or you can get a basic netbook for school and then save up for a good desktop in the future.

I can look online for used stuff, any suggestions?

If you have a Fry's Electronics nearby, this will get you some low settings:
http://www.frys.com/product/6249860?site=sr:SEARCH:MAIN_RSLT_PG