My ATT phone recently broke, but I have the sim card and want to purchase a new cell phone where i can just switch my old sim card into it and use it. What is a good ATT cell phone that I could do this with? Any suggestions or things to look for?? Im not very good with cell phone stuff.

Well, you have a couple of options. You can buy a Go Phone from like Walgreens or Wal-Mart (if you plan on going to a corporate store or a radioshack, they can't do that) and just slip the sim card into that phone and activate it. OR you can buy a new handset for full price. The Samsung A437 is 199.99 at RadioShack, you can buy free standing phones there.