Windows only...
There are so many other options - but they all involve linux somewhere - which for a MS shop is a no-no.
Of course, linux is OAK on thier servers :-)
Jacqui
p.s. My desktop some 10+ years ago consisted of a IBM Power PC, a Sun3 and a SunServer. My main desktop was distributed across the three machines with dev applications and email etc runnning on the SunServer. The Sun3 provided the screen and the IBM provides the desktop manager.