You don't have a video card. Your computer is using what's known as onboard graphics. These work by taking a chunk out of the memory in the computer and use it to give you a picture on your screen (in a nutshell). That is to say, if you have 256Mb in your computer, you're probably using around about 64Mb of that for your graphics.
What your friend probably meant was that you don't have enough memory in your computer. You can find out how much memory you have as follows:
Right-Click My Computer -> Properties (you'll find My Computer on the Start Menu if it isn't on your desktop).
You'll see three sections: System, Registered To and Computer. What do you have written in the computer section?
Edited by Neil Jones, 03 February 2006 - 05:20 PM.