D'oh! I should have used my company's mail archives (http://zope.nipltd.com/public/lists.html) before I wasted bandwidth! In fact, I should have looked here: (after learning how to use my mail client! ;-) http://www.zope.org/Members/lalo/cron and then asked Martijn Pieters whether he has had any time to play with zScheduler. Well, any luck Martijn? cheers and apologies, Chris