Penumbra overture runs slow

[Urkle]

I have AMD Athlon 64 3000+ 1.80GHz, 896 RAM and 256mb video ATI Radeon Xpress 1250 but still work slow, very slow((

Elaborate on "very slow". Do you mean like 1 or 2 frames per second slow? If so you may not have the ATI binary drivers installed or configured correctly.

You can check this by running
glxinfo | grep direct rendering
direct rendering will be "Yes" if you have the drivers configured correctly.