False User/password

I lethe user enter a username and password and through a SQL-statement I
check if there is a corresponding password in the database (Yes I know,
not very good security but for the moment it's enough). Problem is that
when I enter a false user/password, I want the code to redirect to
another .asp-page which states the user is not valid. Problem lies
within the statement "if rsMOS is nothing then response.redirect
"VWGloginAgain.asp" ". Somehow, the code does not return 'nothing' but
something else.
How do I figure out what it returns? Or, how can I make sure it returns
a 'nothing' when no such password is found in the database?
Here's my code snippet ('usr' and 'ww' are defined earlier; furthermore
I've left out the redirects, but I've tested the first
if-then-conditions and they work fine... Just the 'nothing' does not
work):