So I moved to Orcon from Vodafone. And now have a fancy new orcon gigaset sx763 WLAN home hub. Which has so far been quite a pain in the bracket to use. I have set up encryption and all my devices:xbox360, PC and apple macbook now connect to the internet (YEAH!). 

Except they can't see each other I can't ping the xbox360 from my PC and my xbox360 can't connect to PC (BOO!).

So I ring the help desk they forward me to the Siemens help desk who first ofall told me my receptions to crap and they'd 

call me back. They never did. So I call again 2nite to be told, after trying port forwarding configuration on the router, 

that I can't be helped they were out of ideas. Has anyone set this up????? Give me any clues as to what could be wrong. 

It is extremely annoying. I have turned off mac filtering andadded both IP adress of PC and Xbox360 (not sure which ports.)

 And it almost looks like it works and sometimes I can manage to ping from the PC but it never really seems to connect.