So I downloaded supreme commander beta.. installed everything and the new patch, ran the game it worked fine then tried to run the game again and I keep getting this error..

GAL Exception: file : c:\work\rts\BETA\code\src\libs\gpggal\DeviceD3D9.cpp(1091)
error: Vertex shader 2.0 required

Module : G:\wow\Supreme Commander\bin\SupremeCommander.exe
IncidentCount : 1
IgnoreUntilIncidentCount : 0
Exe timestamp : Oct 26 2006 17:25:30
Callstack :

this have to do something with my video card???

if you are running nvidia make sure you have the new drivers and be sure your directx is up 2 date

also be sure your beta is up2date and check if you have the .net dealy some programs require that

Definitely check drivers/etc (as Heidi said).

Also, it could be the video card because only certain levels of hardware support "graphics features". It looks like your drivers/hardware (one of the two) is lacking "Vertex shader 2.0" support.