I'm coming back and was going to wait a little longer to register but I had to respond to this since my day job is in Informtaion Technology.
There are a number of options for recording yourself on the computer but doing so with other inputs, like from a CD, or creating two tracks of yourself playing takes a little more than just the simple software with Windows.
I've gotten good results with a piece of software called Audacity from
http://audacity.sourceforge.net/ .
Audacity is open source, free, and it's available for Windows, MAC OS X and Linux. I've used it on Linux and I've just switched to a MAC and plan on using it on this new computer very soon.
Hope this helps.