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will it be an rca type connection
Composite is an RCA type connector, and will be the easiest to get out of your computer. You can get an S-Video to composite adapter for around $7 shipped off Ebay (or $20 at Radio Shack, plus another $10 cable).
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With a card will I be able to hook it up to the vga port on the computer
This is harder, since it won't take normal VGA, but is still doable. Take a look at the Playstation/PSOne threads for more info, as they take the same as your display (at least the NTSC ones, PAL ones seem to be different for some reason).