So you've made the mistake to install WHS, Windows Home Server 
And now you want to use your normal administrator password and the f*cking system won't let you.
So, you're lazy and have 15 systems with the same password because you don't want to remember a new password for every computer you have.
You've tried changing the password using control-alt-delete, but that doesn't work, apparently your password doens't meet the 0 days old, 0 length, 0 complexity requirements 
You've tried using the MSC control, but that doesn't work either.
You've tried lowering the complexity requirements in the WHS control center, but apparently those do not apply to the administrator password.
So you're about to give up, when you found this site
Well, the trick is simple, the fixed complexity rules apply not to the account called "administrator", but to the built-in administrator UID.
So, you simply openup the compmgmt.msc and rename the administrator account to anything you like and the you create a new account, called "administrator", add it the "administrators" group and you're done!
Log off and on again, and use your nice standard password for all your connections 