Hi,
I just bought  a new HD camcorder. I was upset to find that my current computer (bought just 8 months ago) was too slow to render the movies so I just purchased a new Dell 420, 2.4GHZ Quad Core with 4GM RAM and and ATI 256MB 2600XT graphics card.
 
The videos are still not playing so editing is impossible. Is the graphics card to blame?
 
Perhaps I should be more specific. I am using Ulead 11 and when I try to watch a clip the sound plays (i.e. the clip plays) but the picture remains frozen on the opening shot. Hance why I asusme it's a graphics card issue.
 
Many thanks for your help
Charlie

I doubt it's graphics card's fault. It's probably software issue. What codecs does the video use? Try this:
http://www.free-codecs.com/download/FFDShow.htm

What are you using to edit?  
 
The effects of the graphic card depend on the tool (could accelerate preview, compositing, etc) but all should have a software mode (most have just that), so it should run fine on a fast Quad Core with enough memory.

Thank you both for your responses. I am using Pinnacle Studio 11 (got it wrong in last post as I have previously tried Ulead 11.5 on another computer).