You patch UO all the way up.
You download UO rice and "uorice" your client.
You make a new login.cfg file with the following lines:
[code:1]; login.cfg file for RunUO Server
LoginServer=*your ip address*,2593[/code:1]
Replacing the *your Ip adress* with the proper one.
Or make your login.cfg file look like this: (but only YOU can connect to the server using this login.cfg your players will need the login.cfg configured as per the above example)
[code:1]; login.cfg file for RunUO Server
LoginServer=127.0.0.1,2593[/code:1]
You create a shortcut to the "uoriced" client in your UO dir.
You double click on that shortcut every time you want to play.