- I have the impression you haven't really taken your time to fully understand my post to you on the PD forum.
There is also a dedicated page about D2X trackers on my Descent site.
D2X-W32 has a built-in tracker address. Provided the guy who has set up that tracker is still running it, everybody using UDP/IP via tracker with D2X-W32 should be fine.
If that guy doesn't, you need another tracker (probably your own). That tracker is a server in the sense that it runs the tracker program (think of it as a phone book) and must be available via UDP/IP on the inet.
If you don't have a tracker available, you need to find some ppl to play with you via UDP/IP (e.g. via a chatroom/IRQ/AIM/etc.) The guy who will be the game host has to tell the other guys (the clients) his IP address. The clients will have to enter that IP address in the UDP/IP options dialog displayed when they try to join a UDP/IP game.
So basically the tracker automates the task of offering and finding a UDP/IP game.
If port 28342 doesn't work for you (10048 means its not available for some reason), try port 0 (that will cause Windows to chose an arbitrary available one, which is fine again).
In order to play via IPX, you need to install IPX drivers (by default they are not installed under Windows, as this is an obsolete networking protocol).
- something is bogus about the screen resolution stuff in D2X-W32, but I couldn't find out what it is. It seems to have something to do with how D2X handles its graphical data (bitmaps and stuff), and it is a little sensitive towards using other resolutions than 640x480 in menu mode. I managed to get it to work acceptably, but I am not totally satisfied. Just look e.g. at the menu background missing when having switched screen resolutions while in the menu (not in the game).
Did you try to switch to windowed mode before changing screen res, and switching back afterwards?