What they said
Plus, PC Anywhere can be "hardened" to make it very safe. (How to do so, I have no idea)
It's approved for our admins so it must be good....
Approx 30 bucks per license or so I'm told.
RealVNC also works, and has the added advantage of being free. :-)
But if you can, Remote Desktop is proabaly easiest, though many admins shudder at the very thought of it.
It's also free, comes with XP and you can download clients for it from MS for NT and Win 2000.