windows 7 saying offline(for 3g) but wifi working fine

Firstly, I have to say I am very impressed that 3g is working on my phone and I can access my videos.I have one server on a xp machine and the other on Win 7. Here is my first problem.The XP machine with Wi-Fi and 3g works perfectly,Win 7 only wi-fi is picked up by the phone. I entered the pin for it but comes back as offline or wrong pin. Any fixes for Win 7 or work arounds.
Thank you,
Isaac

There's not much to fix in Air Video. The problem is probably Windows 7 firewall blocking Air Video Server and preventing it from handling requests from internet.

Thank you for the quick reply and you are right,it was the firewall which I thought I had turned off.It works perfectly(3g and wifi).This program in time will be very important to me.I am on the road and in hotels that have bad cable tv.To have access to my "stuff" is great. For all the junk that is in the App store,your program is #1 for the most useful.
Thanks again