Help with Airport Extreme card, Constant loss of connection with router

[havockxd]

Hi, I have a belkin N+ wireless router updated to the latest firmware. My mac constantly loses connection with the router een when I am beside it. I have tried changing wireles channels but that didnt help. I am luck to go one day without it losing its connection. I have another mac as well as a pc and that works fine so its not the router. Any ideas how I can solve this problem, its getting really annoying to a point where i cant do my hmw on my mac because of the interuptions.