Any audio recording software will work just fine from the Windows Sound Recorder through to Cubase though Cubase would really be overkill for a straight forward stereo recording like this especially if you aren't familiar with the software.

You could use the Windows Sound Recorder but another free option is http://audacity.sourceforge.net/about/?lang=en which will record plus give you some editing capablility which is good for cleaning up starts and endings. And for free you can't beat the price.