Yeah, John's got a pretty good idea there; simple and inexpensive.
If you want just a little bit better audio, you could also with a small preamp/interface (e.g. Tascam 122L) and use that to record directly to your computer. The sound would arguably be just a little bit better, but then you'd have an extra expense of getting some decent audio/video software (e.g. Sony Vegas) for your computer, and the extra steps of importing your video into your computer (assuming you have either Firewire or a composite/component video interface on both the camera and computer, an extra expense if you don't) and then matching up the video and audio in the software.
It's not a difficult process, and the digital audio quality would be somewhat improved, but it is more expensive and less "automatic" than putting it all right into the camcorder. That's a decision for you to think about, depending on just what you're looking for.
EDIT: Oops, Jeff D. beat me to the interface part of it. The Presonus he shows is also a decent interface of similar class to the Tascam I mentioned. Either one would work fine.
G.