Answer
To Solve the problem with Direct 3d Follow this:
a>Ensure you have direct X 9
b>Go to Start > Click on Run >type the word 'dxdiag' >Click on Run
c>Go to the Display Tab on the Dialog box that appears.
d> Click on Test Direct 3D.After the test you will find the Direct 3D Enable option available >enable and test Direct 3D.
e>also enable the AGP Texture Acceleration.
Now try the Project 64 Emulator.Tell me whether it worked
Regards
Dredd