Friday, I reconfigured a sonicwall to use an AT&T modem in bridge mode. Everything on the Sonicwall looks fine, and I'm not seeing any errors. When I connect to the Windows SBS 2011 server, everything seems fine, I can ping internal and external locations fine. When I go to the client computers, all XP professional, I can ping internally fine, external IPs fine, but external DNS is not working. I'm stuck like chuck on this one... looking at the IP settings on a client computer vs. the server, they're identical. What could be messing this up that I'm not seeing? Maybe something in Windows Firewall on the SBS that I need to look for? Is it just ironic or related that this happened at the same time I switched the DSL to bridge mode? Please help as soon as possible, and thanks!