Have been pulling my hair out over this one for hours, and wondering if someone can help. I have a server with two network interfaces that was running isa 2004 and humming until i installed sbs service pack + isa 2004 service pack 3. Grrrrrrrrrr I can get the client machines to connect to the internet but only by installing the ISA Client on each machine or setting proxy settings etc in the internet settings. Ideally i want the client machines to just work with no configuration or proxy server settings as they were before. Where do i start, and what other information do you need from me if any to find out what im doing wrong Thanks!