I have set up iCal Server on Mac OS X 10.7 Lion Server. Everything works great with all iDevices (iPhone, iPad). However, I would like to share my wiki calendar to PCs also and there is no easy way to do that. Apple doesn't provided any documents for users. I have to search many forums and website to make it work. Below is what I found.
Start with setting Sunbird to connect to your iCal calendar. The information from this website ( http://trac.calendarserver.org/wiki/CalendarClients ) does work :