Originally Posted by sjmoe
If I can't use TNT2, what are my options?
The TNT series of cards do not support hardware transform and lighting, which will make them incompatible with just about any modern game.
For less than US$100, you can purchase a GeForce4 Ti4200 which will give you all the power you need to play CoD. Use that as a stopgap until you can afford something more powerful.