I was looking at VM as in Virtual memory, Sorry I should have been more clear this is NOT running in a Virtual Machine
WD
Ahhh, I was thinking the same thing as Olaf. :)
Changing the amount of virtual memory on WHS is unsupported (since it requires server desktop access). Frankly, as long as you have enough RAM (I'd say at least 1 GB, although I prefer 2 GB) and you're only using WHS as it's designed, virtual memory isn't an issue anyway.