Change the port number for SharePoint Central Administration site

To change a port number that SharePoint Central Administration site is running on:
Open Command Prompt

1)
Go to BIN folder in SharePoint install directory (by default, it would be "C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\BIN")

2)
To get the port number that Central Administration site is currently running on, type stsadm.exe -o getadminport

3)
To change a port number that SharePoint Central Administration site is using, typestsadm.exe -o setadminport -port