|Try statically assigning the TCP/IP information to the wireless network interface of your laptop before you do anything else.|
First, connect to your router's management interface and check the "DHCP Scope". You want an IP that is not in the scope so as to avoid any chance of a duplicate IP address. Typically, the DHCP scope configured on most SOHO Routers looks like this:
192.168.0.100 to 192.168.0.199
So if your scope matches that, an IP like: 192.168.0.50 would work nicely since it's outside the DHCP scope. The other TCP/IP settings you need are; Subnet Mask, DNS, and Default Gateway.
The DNS and Default Gateway IP's would be the LAN IP of the router (the same IP you type into your web browser to connect to the router's management interface) and you will use the same subnet mask as what's configured on the LAN side of your router.
So, let's say your router's LAN IP is 192.168.0.1 and the subnet mask is: 255.255.255.0 and the DHCP Scope is what I said above here's the settings you would deploy on your laptop's wireless NIC:
Once you've statically assigned TCP/IP settings approrpriate to your LAN, then try connecting the laptop. If it works, don't mess with it any more and enjoy. If that doesn't work, get back to us here and we'll see what else we can come up with.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.