Changing XP firewall without loggin in as Admin

Tips for Windows XP:
You can easily change your firewall settings, as normal user, without having to switch to the Administrator account.

Type the following command:

• runas /USER:administrator wscntfy
  

You will be prompted for the administrator password, so type it.
Then you will notice a small icon on the tray. Then just right click this icon and click on the "Open Security Center" option, highlighted in yellow.
That it.