Hi, anyone knows whether is there any card or system that i can buy to capture the frames that comes out of another computer''s video card and make into a movie clip?

You could use a TV-out card and record your monitor output onto a VCR, then reverse it so your computer records from your VCR.
OR, make the input on one video card on one computer the output of the one running the app that needs to be recorded. That''s kindof complicated.
It''d be easier just to code it to output each frame into an AVI file or whatever format you''re using. You can find documentation on the AVI structures and functions.

There are programs that do that, like at http://download.com.com/3000-2194-10116644.html?tag=lst-0-7