Nice cygwin help file.

Cygwin is a Linux-like environment for Windows
http://www.cygwin.com/

The only good reason I can find to run cygwin is to create server running SSH on a Windows XP machine for free.

Its also a great environment to learn more about Linux or Unix administration without having to run a dual boot. You can play around with X11 port forwarding and basically get a more powerful version of Exceed or ReflectionX. I had another article on Xming with putty which is much simpler to setup and use.

Nice help file.
http://pigtail.net/LRP/printsrv/cygwin-sshd.html

I have a misc info page at: http://rampart-ssh.com/cygwin info page.rtf