Hey, I'll tell you how I record. I use Pinnacle Studios, and use a program called Free Sound Recorder to record my voice. You should try it.
...yeah just use a software with really shit sound recording quality and next to no recognition behind it or support for future development. Great.
Download Audacity, you CAN'T record your commentary and game audio at the same time in Pinnacle Studio unless you have a PA Mixer, I don't know why you seem to think you can - but do you think the rest of us (In our Dazzle Days that is.) would use any other recording program if we could record our voices at the same time as we record and keep it in synch?
Really stupid question, really.http://audacity.sourceforge.net/
Download it, use it instead of other suggestions as it's the best Free Sound Recording Software out there.