go start> run> type DXDIAG
let it run ( it takes a couple of minutes
then go to display and there you can see the type, model, manufacturer...
You can also rue the test dor direct 3D, cuz ull need it for RCT3
and i'm warning you, for RCT3, accroding to atari, you absolutly need an ATI radeon or geforce card for the game to work ( talking with experience)