I've got an ATI X1950 pro graphics card

everytime i attempt to play Conquer online it keeps coming up with the same message

"The game cannot be started. The problem might be related to your version of Direct3D. It is suggested you reinstall the graphics driver. You can click 'OK' to run Direct X Diagnostics for details."

i have reinstalled my graphics driver, and and reinstalled Direct X, does anybody have an idea?