my shaders do not work I have ver.3.72

Did it work on previous versions? If not,

Problem: Your video card doesn't support shaders
Solution: Buy a new video card from a store! Remember, it's a piece of hardware so you can't download it from the internet.

Problem: Your video card doesn't have updated drivers
Solution: Download drivers! To do that,

- Figure out what video card you have. To do that, go to start - run - type in dxdiag - display. Name should be it.
- Go to www.google.com and type in "*your video card* drivers". Some of the more common drivers are for Ati and Nvidia, so here are the links for those:

Ati drivers (click)
Nvidia drivers (click)

make sure your syatem supports Shader 2.0
If it does update your gfx drivers.

post your dxdiag display tab here for further suggestions