Hello all, I am in need of a program or a web-based solution that will allow multiple computers, either Mac or Windows, to share and control calendars. Currently, we (well my parents) have been using iCal and iSync, but it's not a smooth and easy operation (for computer newbs like my mom). It requires you to edit an iCal calendar, quit the app, sync it to .mac with iSync, and relaunch iCal (to get any changes from other users). This actually is working *ok* for the moment, but we need to access the calendars from a PC running Windows XP. I know of Now Up-To-Date & Contact, which pretty much does what we want, but I'm trying to save my parents' money... to get 3 licenses for that app it would cost $360! My dad showed me Yahoo's online calendar system, but since its freeware (and it's Yahoo ), I'd rather not use that, since the data on the calendars is used for their small business and its very important that there is an easy, stable, secure way to access it. Anyone have any suggestions? Thanks in advance.