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					Originally Posted by johnny4  Could you tell me if the output ( S-Video or DVI or ..??..) of the graphic card influence greatly the quality of the copy ? | 
	
 I only had some experience with a MiniDV camera. It only supported S-Video.
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		| Do i need an expensive graphic card , or can i obtain good quality with a mainstream one ? | 
	
 The quality can be affected by your graphics card and even by your cables! And I can't really help you in choosing hardware; this is a question for guys that really have lots of experience with such things.
Why don't you just try a 
screen video capture software instead. Just get a free program like 
CamStudio or Jing and see whether it is good enough for you? It works fine unless your computer is very slow.