Syncing iCal and Address Book over several macs?
http://fruux.com/ is the free MobileMe choice for specifically that sort of arrangement.
And also certainly you can sync to the very same Google personal digital assistant and also calendar, though when I attempted that, there was constantly some details not sync' ed actually well. Yet that was possibly simply me. If you are interested, there are great deals of just how - to is around, one being below: klick
Hope I can aid.