I was finally able to put together a simple script that generates a more complex password for the SA account.  It is 128 characters long and uses 81 different values.  You can add more special characters if you want.

The basis for this script came from http://www.sswug.org/see/T-SQL_procedure_to_generate_passwords_for_Standard_Logins-26104

DECLARE @String varchar(81)

SET @String = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz~`!@#$%^&*()_-+=?<>'

DECLARE @Cnt as int

DECLARE @Pwd varchar(128)

SET @Cnt = 0

SET @Pwd=''

WHILE @Cnt < 128

BEGIN

  SET @Pwd=@Pwd + SUBSTRING(@String,CONVERT(tinyint,RAND()*81)+1,1)

  SET @Cnt=@Cnt+1

END

SELECT @pwd

EXECUTE master..sp_password null,@pwd,'sa'