Jazz Jackrabbit 2 Online

Yes, still the same problem. But I think this is a bit different. This PC is part of a wireless network, and it's like this:

PC--->ADSL modem--->Wireless Router--->OUTER WORLD

I think I set the port forwarding for the wireless router
, but when I try to set the port forwarding for my ADSL modem it keeps saying "ERROR: Unable to apply changes !!" for no reason at all. Maybe it's because I do not know what's the difference between "Inside IP" and "Outside IP" and "Inside port" and "Outside port". You can view the NAT setup at. Does anyone know the difference between Inside and Outside, and do you know what I should fill in there?

*- I added "JJ2" two time; one time with TCP and one time with UDP settings.

EDIT: I managed to get the ADSL modem NAT to work, and now it looks like this: http://router3.png. However, still no Jazz.