What kind of CPU - Pentium 3 (1ghz)

OS - Windows 98

amount of ram - 256k ram

Video card - Geforce 3

Version of Vid card drivers - hmm this could
be the problem havent updated them since before xmas

Version of DirectX - latest version

What is the message your seeing.

no message - try and run game it crashes to desktop and asks me to connect to internet. Once i connect the single player game runs fine.

Most likely your video card is having issues with the OpenGL part of the game
Try getting the latest drivers, for it