I am using ISA server on my network and I have installed isa client software on windows 98 machine on my network. Windows 98 looses its connection with the isa server after some time. When I refresh the setting for the proxy client by typing the ip address of the server and refresh/update and it works successfully and if I use the hostname it can't find the server. after refresh it works fine then again later the client software in the system tray will get a red sign on it. and client can't access the internet. can someone help me out. how can i fix it.