1) Download
this file and place it in the same directory as your 3.6 exe
(This is the same file Kazan provided, just without the .fs2 extension. YOU DO NOT NEED TO CHANGE THIS FILE IN ANY WAY)
2) Start the launcher, check that your network settings are correct. Hit Run to start Freespace 2 and save any changes you made
3) Select or create the multiplayer pilot you're going to be using, then click select.
4) Go into options and select the multi icon. Turn on PXO (You can tell if it's on by the little dot next to it, it will be lit all the time if it's on)
5) Enter "test" for the username and password for the PXO info. IT IS CASE SENSITIVE, so make sure it is all lowercase. Check that caps-lock is off
6) Accept the changes and enter the ready room.
