My scene runs at 35fps, but it doesn’t look smooth. If I turn on vertical sync in RivaTNT’s OpenGL settings, I lose some fps, but I get smoother running. How can I turn on
vsync in my application? Is there anything else that can be done to get smoother running?? I use Win32 and popup window to get fullscreen.

The only way you can set Vsync is true the video card driver.

Some cards doesn’t support that.