I'm using the Gene Cash calendar, for testing. I've got it running for a few months. But it seems to work very differently from my Palm, so I don't trust it for anything. I tried to set an alarm for a couple of weeks later, but there's no pop-up or notification anything like on my Palm. Besides, it seems to keep track of (or trying to keep track of) events by automatically starting itself every night at midnight, instead of scheduling the N800 alarm system. I'm very reluctant to use this instead of my trusted Palm. (I don't think the GPE stuff works any better btw.)