Ok, that helps
I see, you try to use your onBoard graphics...
Integrated NVIDIA NV17-class (GeForce4 MX) GPU
256-bit 3D/2D graphics accelerator
Shared system memory, up to128MB
On my PC at work, I also have a shared memory graphic system.
Though its an 1200 Duron, you realy can forget AC3D. The performace is sub par, and not alle 4 views work. There are only 1 or two working...
Anyway.
You realy should buy a better graphic card.
If you want to keep your current system you could buy a used GeForce4200/4400/4600 or something new like a GF FX6600 GT.
Or maybe, you still have your old graphic-board? Try it