I have a windows SBS 2003 premium sp1 server running isa server 2004. I have a problem with this as I want to run isa in proxy and caching mode only and I cant seem to do it without isa interfering with windows firewall settings and group policy settings. I am thinking of removing isa 2004 and installing isa 2000. Would there be any issues with this and do I need to uninstall the MSDE instance for ISA 2004. My real problem is that i cannot get OWA to work remotely and I know that if I remove ISA 2004 it should work. What would be the best course of action. Bear in mind that I do not need the firewall capabilities of ISA server.