Help with MS Access

I need help in building 3 different kind of forms in MS Access. I got all the data just need to help me out with the technical stuff. Here are the details of the form: 1. Need a make a combo box to select customer's name. On selecting customer's name, the text boxes below should show other details of the customer from the data table for example address, city, phone etc. 2. Need to make a form with 3 buttons: Previous, Next and New Employee. Form should show details of one employee. On clicking previous, it should show details of another employee and vice versa. And when click on New Employee button the form allows you to add new employee. Again I have all the field and button but the buttons/fields aren't working. 3. Make a login form using the "username" and "password" fields of the table. The task is due in 12 hours MAX. Thanks.