The .wsx files are easy as hell to get. Go to
http://napmx.darkservers.com and download NapMX 1.11 . It gives you a list that you can turn into a .wsx file and save anywhere on your system. After saving the file just drag and drop into the desktop shortcut to WinMX either while minimized or before you start WinMX (dropping the list in will automatically start WinMX, as you know). NapMX .wsx files have two great advantages over those created using current versions (~2.02+) of Napigator - the hostname is the primary way to access servers, not IPs; this makes NapMX .wsx files more reliable and you don't have to update them as often. Also, NapMX .wsx files go into the high capacity category, so no connecting one at a time or moving networks from low-cap to high-cap, which take forever. Since I got NapMX (Viva Boob), I've stayed on around 30 servers constantly with close to an exabyte available through OpenNaps.