http://download.microsoft.com/download/3/e/4/3e438f5e-24ef-4637-abd1-981341d349c7/WindowsServer2003-KB892777-SupportTools-x86-ENU.exe
C:\Program Files\Support Tools>httpcfg.exe set iplisten -i 192.168.0.2:8081
HttpSetServiceConfiguration completed with 183.
C:\Program Files\Support Tools>httpcfg query iplisten
IP : 192.168.0.2:8081