The following link is where approved MSDN Security code can be downloaded.
http://download.microsoft.com/download/MSPressPub/Utility/1.0/NT5XP/EN-US/secureco2.exe

 

A great article on Form Authentication -- ( 10 steps to setting up) by Paul Murphy, ( A DCC from Pacific NorthWest)
http://www.paul.bz/formsauth.aspx