If you are trying to locally define a static IP, you need to turn off the DHCP server on your router, then in your wireless adapter settings you need to define the settings:
IP: 192.168.1.36 (The ip you want)
Subet Mask: 255.255.255.0
Default Gateway: 192.168.1.1 (Most routers have this as their IP address, but yours might be different)
Then in Prefered DNS server, put your router IP address again, you can leave the second one blank.
With this method though, ALL computers on the network need the info put into them, because the router won't automatically assign a IP address Though you might want to try it first while leaving DHCP server turned on, it might still work?