Just to clear things out a bit - XP Pro - IIS 5.1 not IIS 6.0 Now- a) is IIS installed? do you see world wide web services installed and running ? if you go to command prompt, enter 'net start w3svc' - what's the reply ? b) at the comman prompt enter 'telnet localhost 80' - hits enter key many times, do you see 400 bad request or connection can't be established ? if later case, then VERIFY there's no firewall blocking and IIS is installed, running and bind to port 80. c) also check event log to see any related error entries.