I am wondering whether installing teatimer as a resident program is something that should be left strictly to the experts?
Failing to allow a change to the registry that is right and proper can be almost as damaging, it seems to me, as allowing a change that should not go through. And bona fide changes are likely to outnumber the malicious ones in Spades. The information that is displayed by Teatimer's prompt, when a write attempt is made, might as well be encrypted by pgp for all the sense that it makes to me, who freely admits to not being in that circle.