Login Prob

when the user enters his userid and password i want to
check the password from the table..

if any user with the userID that is entered exists i want
to find the correspoding password for him else i want to
throw an error saying no such user exists..

i know how to access the MS Access table and stuff..but
now what i want to do is to take the userid and see if
there is any userid such as the one existing, and if there
is i want to take out the password for that user ID..

what i am trying to do is as below.

The prob is, once i get the data in the dataset, how do i
take out the password?? Code: