I see at the MSI site that there are versions of that board with a built-in GPU.
• MS-6533 (Standard Version)
•
MS-6533G (Integrated VGA)
• MS-6533-L,
MS-6533G-L (10/100 LAN)
http://www.msi.com.tw/program/produc...ail.php?UID=45
Do you have either of those versions? If so have you checked your BIOS Setup to verify that the on-board GPU is disabled?