Okay, this might turn out to be long. I have a WiFi Max router for a PC, and a DSi. I have two Mac computers and a PC connected to one network, and the router was connected to the PC. I'm sorry if this question will be vague, but right now the PC is not connected to the network, so I can't check exactly what the problem was right now.
The problem is when I had all of this hooked up, I tried to get the router working using the IP address of the computer. It gave me a message basically saying that it can't use an IP address connected to a network.
So is there a way around this? I tried turning off the firewall to see if that was the problem, though I think that's a bad idea. It didn't work anyway. Once again, sorry if this question is so vague.