I just bought a copy of Windows Small Business Server 2003.
I plan to use one power machine to install it and want to:
Enable Exchange server,
Enable Fax service,
Enable Terminal service,
Enable Web servie,
act as domain controller(only have three workstations) and print, file
server.
If the internet is directly connect to the SBS server, how to provide
security here, only need to enable the gateway come from the OS? how to
configure this?
Do I need DMZ or VPN? how many licences SBS provide by default? Please
advice.

Also I saw Dell have "Desktop" and "Workstation" pc for sell, what's diff?
which one shoul I pick for?