now here is ATI Mobility Driver for vista just download this file from IBM
Lenovo Support & downloads - Video driver (ATI Radeon, FireGL Series) for Windows 2000/XP - ThinkPad A31, A31p, R40, R40e, R50, R50p, R51 (1829, 1830, 1831, 1836), T30, T40, T40p, T41, T41p, T42, T42p, X31, X32
Extract this file and update your video display driver .
You will able to support opengl for games and S-Video Port.
Update Driver in vista:
1- Click Start , Right Click on " computer " , select " properties ".
2- Click on " Device Manager " at left.
3- Expand " Display Adaptor " and right click on driver , select " Update Driver Software ".
4- Click on " Browse my computer for driver software ".
5- Click on " Let me Pick from a list of device driver om my computer ".
6- Click on " Have Disk " and locate the extracted folder .