How to run client and server on one PC?

The easiest way to do this is to just open up the game twice. If you have two monitors you can put a game on each and watch both at the same time otherwise you can just start the server and the minimise it while using the second version to play.

+1 to Thedr. He nailed it. If you like to run fullscreen and only have one monitor do this:

1: Open Artemis launcher, select 800x600 window
2: "Start Server"
3: Open a second instance of Artemis Launcher, choose "Full Screen Windowed"
4: "Start Client"
5: Enter "localhost" or "127.0.0.1" for IP address and connect
6: Alt+Tab to the server window to start
7: Alt+Tab to client window to play

Only twice? Let's kick it up a notch!

I've managed to run one copy on the main screen, a second copy as the Observer mode, and a third on a touchscreen connected via a USB/VGA adapter as helm. Booyah!

Now if there were a way to bind a specific USB device to a single Artemis instance, then you could have one keyboard/mouse (or touchscreen digitizer) locked into a single copy of Artemis.

Result: an entire multi-station setup on a single multi-video-card PC. It's an Artemis LAN in a can!

VMware lags things a bit, so it's not an optimal solution. Works though.

@LawsonThompson I think I can do you one better, although without the touchscreen.

FIVE instances of Artemis running in 800x600 on one screen, with Open Broadcaster Software running in the background streaming 4 of the five screens straight to twitch.tv.

Screens showed as follows:

=Streamed=
Artemis Main Screen (Tactical)
Intrepid Main Screen (Tactical)
GM Console
Observer

=Not Streamed=
My dash that included Weapons/Engineering


Server was externally hosted, but I'm sure I could have handled the Server as well.

*Googles Open Broadcaster...*

Whoa! And here I've paid for Fraps! *doh!* Need to check this out...