I got 3 phones and a base unit in seperate auctions. I need to know how to register the phones to the base. I know they have to be de-registered first. To do that I pushed and held the "handset locator" button until the "in use" light comes on, and then flashes. (abt 10 sec) Then, release the button and then push and release it again quickly. This should de-register all the phones. I think this is working. Now I need to know how to register the new phones.