I installed a Cisco 861 Router into a small business that has about 40 clients about 2 weeks ago. The router worked perfectly for about 4 days. Then I got a call saying that nobody could get on the internet. All the PCs were set up to pull DHCP. I hooked up my laptop and found it was pulling a good address, subnet, and gateway though for the DNS; the router was handing out it's own IP address instead of the ISPs DNS addresses. I could put in a static address along with the correct DNS servers and get out to the internet perfectly. (Ended up setting up everyone static, which really sucked.) Though, they need DHCP for laptops. I made sure that the DNS servers were set in the DHCP pool, though it refuses to hand them out. I even Restored to Factory Default and set everything up fresh, with no luck...... Not sure what to do next... Maybe a flash update? Any help would be greatly appreciated.