[SteveWoodward]

Not sure if this is what you're looking for, but here's what I do:

I drag a list item from Outliner into iCal and set an alarm. The way I figure it, rather than have reminders come from different apps, I use iCal for everything.

The only thing is some extra characters are placed into the title of the item (at least in my case), that include the row number from Outliner, etc. I can live with it, it's up to you.

Steve W