I recommend:
> Wegame, its free and gives good results with the least hit on hardware of any recorder
> Of the bought ones I reckon fraps is the best all rounder
Many of these companies offer a trial version of te program, so try a few out
also this means you check the recorder works with your game of choice, before you purchase
Here is a list of game recorders:
FastCapPro:
Tutorial Video[How to use it]
sry couldnt find one! ;d
A video how it records:
[flash(425,350)]http://www.youtube.com/v/uFH-yqVZ22A[/flash]
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GameCam:
Tutorial Video[How to use it]