Need Help accessing Zavio F312a outside my network

Hello,

I am having trouble accessing the Camera feed unless I am at home on my own network. The camera is set up for wireless use and functions great at home. I can use Safari 4 in 32 bit mode and access the video. Also, my iphone works great as long as it is using my WiFi. As soon as it switches to 3G when I leave the house it will no longer function. I tried both using Safari and Icam Viewer. I am sure there is something I need to do to allow internet access but can not figure it out. Any advice would be much appreciated. I was also hoping to be able to give an IP address to my Mom in Cincinnati so she could peek in on the Grandkids.

Thanks!