Today my sister got a new lap top and I'm having difficulty adding it to the wireless network. My desktop is connected to the modem and router, so I logged into the router and added the mac address of the new lap top. Even after this I was unable to see my network on the new computer. This was finally resolved when I enabled SSID broadcast. Now here is the current problem; when I try to connect to the network from the lap top a message pops up saying there is an "UNKNOWN ERROR". I keep trying things to resolve the issue, but can't seem to figure it out. I know there are many talented and capable computer guys on TalkBass. Please could someone guide me in the right direction? Thanks for taking the time, Sam.