I have a small home network with a wirless router, two wired PC's and two wireless notebooks. Two wireless notebooks and one wired PC are working fine and one PC has connection problem. On that PC, I can successfully ping all other computers but not the router. I do "pin 192.168.2.1" and got "timed out". I can transfer files among the "bad" and "good" computers, but the bad computer can not access the internet. It seems like a local configuration problems, but I don't know how to solve it. Any help are greatly appreciated.