Looking at one of your earlier posts you mention a direct connection between 2 pc's, using your wireless connection. You should be able to set this up quite easily using the adhoc option. This will anable you to make a direct connection to another pc just as if you were using a crossover wired connection.

I'm not familiar with your router. But if it is acting as a network switch within your home network enviroment and only routing to the internet, you should be able to scan etc, with no problems on your wlan.