Upgrading my PC

I have a computer at home that is rarely used. I want this computer can be used to edit videos from camcorders plus playing games such as F1 2000, MotoGP, and others. For information, the computer's specifications is as follows:
• ECS K7S5A Motherboard
• AMD Athlon XP processor 1700 +
• Memory 256MB SDRAM Visipro
• VGA S3 Trio 4MB (This plan would replace ane)
• 80GB Seagate Harddisk

The board supports SDRAM and DDR. Which one is the better? The board also supports AGP 4x and I want to upgrade my S3 Trio graphic cars. With an inexpensive AGP card. Any suggestion?

Answer:
SDRAM is already expensive at the moment. If you still can find any. It's better for you to use the DDR.

If you want to edit videos, you need a big RAM capacity and fast processor. The Athlon that you have now is a bit sluggish for video editing software.

I understand that S3 Trio AGP 2x, which may be used motherboard supports AGP 2x/4x so it would not matter that VGA fitted.

It's better for you to do a major upgrade, because the upgrade options you have is limited and actually just a waste of money.

But if you still want to do it, go for Radeon 9550, GeForce 5200 or a 6200 AGP, for example.