Dataset Not Refreshing On Program Close?

I'm working on a punch-card type program and I'm designing a password change form, so that employees can set their password whenever they first log in, or whenever their password is reset.

The Program works like this: (Code to follow)

1) User starts application

2) User types in their username, and then enters their username as the password. (first time the program is ever run.)

3) The password change form appears, and they enter their desired password in two text fields and clicks OK.

4) The punch-clock form appears, and they begin using it like normal.

The problem I'm having is that at the end of step 3, the program updates an access database, changing the row with the correct username to have the new password. The password in the database changes, like it should, but when the application is exited and then started again, it acts as if the username is still the password.

Below is the code I'm using for the Login Form, the bottom section is a user class that I built just to hold username and password for the logged in user.

Public Class LoginForm
'Creates a new object to house the logged in user's information
Public persona As New User

[Code].....