Hi,
I've just formatted my PC with NTFS format and installing W2K SP4 & IIS. Then I test the connection using http://localhost.

Once I clicked the Go button in the address bar, the outcome was surprising me because instead of accessing to my current pc, the http://localhost has pointed to my Microsoft Exchange Server. Do anybody know the main cause of my problem and how can I fix it so the localhost are pointing to my local pc instead of pointing to my Microsoft Exchange Server.

Just find out the solution. I just went to Internet Explorer > Tools > Internet Options > Connections > LAN Settings

and checked the Bypass proxy server for local addresses