The short answer is: it depends.
I run AutoCad r.14 via VPC 4.02 on a 500Mhz Pismo. I work with AutoCad in an external monitor, and I live with the slight pauses in the screen refresh rate. VPC only emulates 4MB of video ram, so this may be the problem. I don't know how it would stack up with the GeForce video cards in an 867.
I don't know much about r.2000. AutoCad will work, but the real question is will it work for you.
You can also try this discussion