wine users - May 2009 - Nvidia 8400 Gs not detected correctly

I'm running an Nvidia geforce 8400 GS 512 Mb card, but when i go into the
oblivion options, under the Graphics adapter tab it shows me Geforce 8300 Gs
whcih is a motherboard which I assume has some sort of GPU onboard.
This would explain the subpar framerates im getting.

Best bet is to set the card ID/Vendor and graphics Vidmem under
HKCU/Software/Wine/Direct3D using regedit if you haven't already plus the
other 3D options.

See http://wiki.winehq.org/UsefulRegistryKeys