regarding dynamic changes in form

Hi i have a form which displays the address details in the next tab for the selected record in the main form(having 3 tabs).

Each employee has present,permanent ,other addresses.the address type is a combo box which displays these types.

Now in the form if the combo box value is changed, on the fly the address should be loaded correspondingly into the form .

If there is any method to do this, pls let me know…