Hardware Issue Freezing Computer in numerous situations

[CovertCow]

Everytime I try to play certain games (Pool of Radiance, Myth Wolf Age), My computer freezes erraneously.

I have

Intel 440-BX2 Motherboard
P III 450
Antec 300Watt Power Supply
Asus GeForce 2 MX \2VID (but im not using the second monitor capability)
256mb RAM
TB Santa Cruz

There isnt really a common time at which it freezes. Thanks for your help, I think this belongs here, because I don't know what other catagory it would fit into.