Using to record demos with commentary

Spent today trying to figure out a freeware solution to record a windows demo with audio commentary so that I can record some brain dumps for work.  Ended up using but I had to drop the frame rate some to get it to work for any respectable length.  But I have recorded a couple of them at this point and have a decent process.  

This was a bit frustrating at first but quite gratifying as I have worked to remove barriers.  Now, I love it.  I have a way to pass along knowledge that is more durable than a good-luck-remembering-it walkthru and it is not as tedious to create as a document.