Welcome to Talkbass! You've come to the right place, there are a lot of cool people here with a TON of information!
I use one of these:
http://pro-audio.musiciansfriend.com...-PF?sku=250003 http://line6.com/podstudioux1/
It's an AWESOME setup for the price. It's got the USB interface, has inputs for guitar/bass, mic (with mic gain knob), and 1/4" line inputs. It also comes with the Podfarm software, which is pretty sweet... a bunch of stompbox/amp gear in software form. I've got a few of the pedals they've modeled and they've actually done a really good job modeling them.
You can only record one track at a time, but that's definitely all I need at home. It's also a great way to practice, I just run through headphones and I don't piss off my roommates/neighbors.
I'm VERY happy with it for the money! Go to my Bandmix page in my sig and check out the three "Original Idea" tracks... I recorded all the parts through the Pod. (Drum machine and keyboard go to a mixer, mixer goes 1/4" stereo line to the Pod).
I'm REALLY happy with the Pod... probably one of the best purchases I've ever made.
5sg.