Wireless trouble

Hi everyone. I recently moved and am now having trouble with my wireless internet. I use a Motorola SBG900. At my old house, the only time the wireless went down is when I used the cordless phone. At my new house, it goes out about every minute or so and I have to perform the repair function for wireless connection. This always fixes it, but just for another minute or so. The funny thing is, even when I have wireless connection, the little icon in the lower right corner of the screen tells me it's not connected, but shows great signal strength. The desktop never has trouble but it is hard wired into the SBG900. The laptop is a Dell Inspiron 5100. Can anyone help me with this? My wife, who relies on the internet for work, would be greatly appreciated! Oh, also, I have no firewall on.