GhostHunter, the IP address system has been organised so that there are two separate groups of addresses.
One group (or "range") of addresses is "non-routable", this means that any network equipment which receives data directed to an IP within one of those ranges will not send it out onto the Internet.
The other group of addresses is
routable, and data directed to IP address from within those ranges can be sent across the Internet.
Your LAN (Local Area Network) contains only non-routable IP addresses. All of the IP addresses in the sequence from 192.168.0.1 to 192.168.0.255 are part of the non-routable range (for class C IP addresses, in this case).
For the UT server running on your PC to be accessible to the outside world, you need to set up Port Forwarding
on your modem/router.
Find your router on this website for detailed instructions: