Forms :: Coding User Login Form In ACCESS 2010

I have used Combo box. security_level field is the one that describes their levels and there are only two levels 1 and 2.. I have a table called User (user_ ID, User_Name, Password, Security_Level) On form there is a combo box for user name and text box for password. Two command button where one is for EXIT (Closing the application) and the second button is to run the code.

if the password in table User matches value chosen in combo box or user name and password are correct Then it should check if Security_Level of the user is equal to 1 to displays a form called Admin and when the Security_Level of the user is equal to 2 to display a form called user1.All that I want is to have a login that has two user and each user when login opens his/her own form which is different from the other user.