It is not easy to find a running WoP server and that is why we decided to help you in finding one. FEzzz coded a nice script, which displays some servers and gives some information about them. Just click on SERVER and you will get the list. You can see the IP and the number of players on the first site. If you want to know more about the server just klick on the green arrow and you will get even more info about the server settings!
If you know more servers feel free to end me an email and I will add them.