I don't have an answer to the question you asked. I do have a different idea that may work for you. Like you (I assume), I have someone that calls me far too often. The Contacts function does not have a silent ringer that you can assign to a contact when he/she calls. What I did was download a ringer app from the market and assign a silent ringer to that contact via the ringer app. Now when that one person calls me, I don't know it until I happen to check the phone for something else. Hope this helps