Some BIOS tips for a G400 please

[Sid]

I have a Jetway BX2000 m/b with 160mb Ram. Can someone recommend some BIOS values as I get random lockups in OpenGL games. The drivers I'm using are 5.3 and the processor a Celeron400. Max aperture size I can set the AGP to is 128MB. Turning AGP2x OFF seems to help. Any suggestions appreciated...