OpenGL with starsiege TRIBES?????

I have a diamond viper v770d agp with the tnt2 chipset. However in Tribes there is no option for OpenGL as the video driver, just software. Quake 3 works with opengl (i think) fine and Unreal tournament works with direct3d. How do i get tribes to play on opengl?

You need to upgrade Tribes to Ver. 1.11 visit or The initial version does not support Open GL that came about with ver. 1.6 I believe.