I used to used Virtual PC as my "work from home" way of connecting to the office...
Now I just use a VPN on my Mac and Windows Remote Desktop. This is by far the slickest, fastest, easiest work-a-home setup I've had... and I've been doing this for almose 9 years!
My home is PeeCee free because of Windows Remote Desktop. (Shhhh... Don't tell Microsoft that.
)