Yes,
I have a Mac Pro (4x 2.66, 5GB) and a MacBook Pro (2x 2.33, 3GB)
Like yourself, I use VMWare for Visual Studio development.
It screams on the Mac Pro, and is "acceptable" on the MBP for travel.
You will definitely feel the difference!
BTW it ran just as well when I only had 3GB in the Mac Pro. The difference in hard disk and bus speeds is the factor.