Interface Help, noob looking for an interface Options

[riverdalereject]

I'm relativly new to digital regording. I'm not completely incompetent, but i am defenatly new to this and just need some help getting pointed in the right direction. I've been producing beats on Reason 2.5 on my PowerBook G4 for a while now, and the time has come to start laying down vocals. I have a Sure-57 which i just plug into the mic input on my laptop. Obviously the sound quality is horible as the mic is underpowered and i'm having latency problems. From doing some research i have gathered that an interface would solve most of my problems, but now the question is which one? All i need is one XLR mic input, one or two midi inputs and a couple headphone outputs. I don't think there is much i'm missing, but please inform me if i am. Anybody that can tell me what interface would work well for me, or even a good place online to get more information is a saint and a god.