I've tried Jabo's D3D6 1.5.1 plugin and D3D7 1.40 plugin with Rocket Robot on Wheels, Perfect Dark, and Conker's Bad Fur Day. With all three games the program freezes at about the title screen or just before.
My specs: Voodoo3 3000, Win98 SE, DX9. PJ64 1.5.1 (I tried this stuff in 1964 0.8.5...