Here, I've modified my code and tested it as much as I can without having AD here...

code:
$user = GetObject("LDAP://PDC.DOMAIN.com,ou=Accounts,ou=Users,ou=Service Account Users,ou=SQL Service Accounts,cn=ServiceSql")
;$user=getobject("WinNT://@domain")
$user.filter="User",""
for each $u in $user
$objUser=getobject("WinNT://@domain/"+$u.name)
? $objUser.name " "
$maxage = $objUser.MaxPasswordAge / (60*60*24)
$psdage = $objUser.PasswordAge / (60*60*24)
Select
Case $maxage < $psdage
"Password is expired."
Case $maxage - $psdage < 7
"Password will expire in 7 days or less."
Case 1
"Password age within parameters."
Endselect
next