No, we don't know if *you* can change it but it can be changed. You will
have to uninstall the current video card in Device Manager, shut down the
computer and pull the plug. Open the case, remove the video card you have
and put a better one in. When you turn the computer back on, it will ask
for drivers for your video card. Use the CD that comes with the video card
to install the drivers. If this seems to much for you, take your computer
to a computer shop and have them install a new "Vista Ready" video card.
Once you've or they've installed the new card, you'll probably have to
call India because Vista will think you stole Vista and demand that you
prove otherwise with a call to India.