GPU help

i have a geforce 6800 go 256mb and i am using the 72.30 drivers from windows
update (because there the only ones that work for me).
The problem is that Dxdiag is saying i have no video memory.

Card name: NVIDIA GeForce 6800
Manufacturer: NVIDIA
Chip type: GeForce Go 6800
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_00C8&SUBSYS_107C1734&REV_A2
Display Memory: 0 MB
Dedicated Memory: 0 MB
Shared Memory: 0 MB
Current Mode: 1440 x 900 (32 bit) (60Hz)
Monitor: Generic Non-PnP Monitor
Driver Name: nv4_disp.dll
Driver Version: 6.14.0010.7230 (English)
DDI Version: 9
Driver Attributes: Final Retail

I think this may be why i dont get aero glass and games run choppy.
Anyone have any ideas?

thanks in advance.