If you just installed the 40.41 Detonator, you can enable software NV30 emulation by adding/altering the following keys in the registry : HKEY_LOCAL_MACHINESOFTWARENVIDIA CorporationGlobalOpenGLDebugRenderer="0"

HKEY_LOCAL_MACHINESYSTEMControlSet001Services vDevice0OGL_NV20Emulate="00,00,00,00"

HKEY_LOCAL_MACHINESYSTEMControlSet001Services vDevice0OGL_NV25Emulate="00,00,00,00"

HKEY_LOCAL_MACHINESYSTEMControlSet001Services vDevice0OGL_NV30Emulate="01,00,00,00"

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServices vDevice0OGL_NV20Emulate="00,00,00,00"

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServices vDevice0OGL_NV25Emulate="00,00,00,00"

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServices vDevice0OGL_NV30Emulate="01,00,00,00"

...or simply download nvEmulate from there : http://developer.nvidia.com/view.asp?IO=nv30_emulation

Have fun !

Patrick Saladino,

Switzerland