Upgrading video card

I have a rather simplistic question, but I am utterly confused because I do
not know that much when it comes to video cards. I have Windows XP with
NVIDIA GeForce2 MX/MX 400, but a game I bought recently lists one of the
requirments as having, "NVIDIA GeForce2 GTS, GeForce 2 Ultra or
greater"....Will my GeForce2 MX/MX 400 be suitable, or do I need to buy a new
video card?.....If I need to buy a new card what is the least expensive card
I can buy to suit these requirments? Thank you.

"Tyson" wrote:

> I have a Nvidia GeForce FX Go5600 video card for my Sony Viao labtop that is
> about two years old. Since it only has a memory capacity of 64 MB I want to
> upgade it to a a video card that has a memory capacity of 128 or 256 MB. How
> do I determine what video cards I can install on my computer?
> Thanks
> Tyson