Show AllYou can use Internet Calendaring (iCal) to send meeting requests to people over the Internet. (The people with whom you exchange meeting requests must also be using an iCal compliant e-mail program.) When you send an iCal meeting request, the recipient can open it and accept the invitation to add it to their Calendar, or decline it.
For attendees who don't have access to your Microsoft Outlook Calendar, you can publish the blocks of time when you are free and when you are busy (free/busy times) to a shared location on the Microsoft Office Internet Free/Busy Service web site or another Internet or intranet location. Attendees can access and use this information when they invite you to meetings.