opengl for sis 300 ?

I have a sis 300 32mb and When I enter warcraft3 game the mouse disappers,the screen get distorted and when I click the buildings they get right when How can I fix it? I Tried a program that opens the game in -opengl, but it gets even worse than… I’ve seen people saying that sis 300 has not support to opengl is it true?.. and How could I play the game without opengl?

plz guys help me if possible…thx…

Toss out that POS from SiS and get a decent 3d board from ATI or Nvidia they have quality drivers.

SiS 3d chips and their drivers are notoriously of poor quality so no game maker even bothers to support them.