Problem with Router Edimax BR-6204WG

[Turbut]

I have a Edimax BR-6204Wg Router and I have the fallowing problem:
I have a D-Link modem from witch I connect to ADSL network. I also have the above router witch I'm using for my home network. The problem is that i have internet on my laptop (wireless and through cable connection), but i can't connect to internet from my desktop PC. I'm trying with the same cable, so it's not the cable and it's not the router (probably). And when I try to connect without the router (only modem and PC) it works perfectly. When I try to connect through router it shows that there is limited or no connectivity. When I set the IP, Gateway and DNS it shows that everything is OK but I still can't connect to internet and I can't enter the router setup interface (I can do that from the laptop). When I ping the router it shows that it is connected and I receive packets. Please help me.