Router Instructions
In 2002, I stopped playing Worms2. It was not by choice that I stopped playing, but because of technical reasons. Worms2 was not designed to be friendly with routers. In order to host games (and in some cases even to join games), a Public IP Address was required. This ruled out people with routers, including myself. Also, Windows 2000 and XP were not too Worms2 friendly. There are DirectX problems that prevent playing network games even if you have a Public IP; even local LAN games would not work.
Well, late in November 2005, I had to fire up an old system of mine to retrieve some files. It was my old K6-III 450 with Windows 98. It also happend to have a modem and Worms2 installed, so I decided to dial up and see if anyone still played. To my amazement, not only did people still play, but there were several patches and workarounds to enable playing behind a router and on modern operating systems.
Most of the information described described below is taking from the following page (Unfortunately it looks as if spadger's page is no longer online), as are some of my downloads (directx patch, IP switcher).
In order to get Worms2 working you need to do the following.