Just get a Creative Audigy Platinum soundcard. Around $200 retail. It comes with creative recorder which is what you're looking for.
You beat me to it. I recently installed an Audigy XP sound card and it has software that can handle this.. In fact it has a lot of software with it.
There is probably some shareware that can handle this, too. Check the Steinberg Audio website (search for the URL) they may have some demos.