Fraps
Many people who want to record there computer desktop for computer tutorials or anything else on youtube usualy use Hypercam or Hypercam 2. This is not a good idea. If you want to have your viewers auctually understand what you are doing, use Fraps. It has much better framerate options and has much less lag. Below is a link to wher you can get the installer file.
http://www.fraps.com/download.php
