Which interface to get?

I'm pretty new to digital audio/recording, but lately I've been trying to use Cakewalk Music Creator (newest version) to record on my PC (Windows Vista). But my sound card sucks, so I need to get an audio interface. I was initially leaning towards this one by Edirol - Edirol Interface .

I like this one because it basically has only what I need, and it's pretty much the only one in this price range that got good reviews. I also like it because it has MIDI recording capabilities, although I don't have a MIDI controller just yet, I might get one someday. Therefore, this one also caught my attention because it is a MIDI controller with a built-in audio interface - Line 6 TonePort Interface .

I'm not sure that either of these comes with any software, as many others seem to, so I want to be sure that whichever interface I get will work with Cakewalk Music Creator.

Anybody know which brand of interfaces tend to work well with Cakewalk software (particularly Music Creator)?

This is something that I would be interested in also. Been out of the music industry for about 6 years and everything has changed. It's not even called Cakewalk any more. I have Pro Audio 6, XP operating system, AMD processor, & Akai MX-73 Keyboard. Wish I was a piano player instead of a bass player. I do have a Mackie 1402 mixer, Carver power cube, and A7 Voice of the Theater speakers. What I am interested in is midi and audio inputs. I a new at this so any help would be appeciated. Slim