Jabo's 3D Plugin Definitions

I'm wanting to make the graphics the best i can during play and want to know what these settings mean in Jabo's Direct3D8 1.6 and Jabo's Direct3D6 1.5.2 advanced settings, they dont explain in the manual and i've searched the forums already:

3D8:
1. Adjust game aspect ratio to match yours
2. Use legacy pixel pipline
3. Force alpha blending
4. Use 3D transformation pipline
5. Force Z compare
6. Copy framebuffer to RDRAM

3D6:
1. Force normal blending
2. Force filtered rendering
3. Disable internal geometry
4. Force depth enable
5. Force depth compare
6. Emulate primary
7. Update less frequently
8. Use low resolution updates

:doh: sorry for that, i had to search a bit to find it but i found it and i found out it won't do anything for me at the moment. Thanks anyways