What is your "my net"?
As long as that net isn't started, you can't access it on the phone. That makes sense. How do you start it to access it via your laptop or PC or xbox?
I see it's a Windows Phone 7 phone. Yes?
Then http://www.microsoft.com/windowsphone/en-us/howto/wp7/start/connect-to-a-wi-fi-network.aspx might be useful.
i cant access my net on mobile. htc hd 2. how can i start it?