Hello everyone. I would like to extend the range of my wireless router, a D-link DIR-825. The problem is I get a low signal at the opposite end of our house. Would it be better to upgrade both antenna or add a device? I have a DIR-825 has my router. I also have lying around not being used a DIR-655 Router, Belkin F5D8236-4 v3 Router and a DAP-1522 Wireless Bridge/Access Point. What be the easiest and cheapest route to extend my wireless coverage? Thanks for an info.