Every time Vista starts up, I get a ZoneAlarm pop-up asking me if I want to upgrade to the paid-for version - I get two options - 'Tell me more' and 'no thanks'. I click 'No thanks' but the pop-up appears every time I start Vista. It doesn't happen on XP.

It is SP1 with AVG 8.5 and Spybot 1.6.2

Not without an extra script: belasting middeling, Timestamp, Timestamper, PhotoTimeStamper, Timeshifter, Noodweer, WOZwaarde, WOZtaxatie, WOZ taxatieverslag

I'm not a big fan of ZA, though.

What version of ZA? Is it 7 or 8? I take it that just want to use the free version so are you sure that you downloaded the free version and not a trial? Have you tried clicking the "tell me more" option? Maybe once you do it will permanently go away. Have you looked through the settings?