Sql 2005 Password Policy Setting

What are the exact requirements implied by the sql 2005 option:

"Password Must Meet Complexity Requirements "



TIA,



Barkingdog



P.S. I found this one:

-Cannot contain all or part of the username
-Must be at least 6 characters long
-Contain 3 of the 4 following character groups
- A to Z
- a to z
- 0 to 9
- Special Characters i.e. ! ^ $ *


and I have also found

"At least 7 characters in length"

Combines letters. numbners, and symbolds

Is not a dicitonary word, name of a command, person's name or user's account name

As the saying goes "close, but no cigar!"