phpicalendar  is a PHP tool that parses ics files. Norm Jones [2,3] wrote a script that converts Outlook calendar items to iCal files which are easy to spread among a group with phpicalendar:
The outlook2ical utility is a VB macro that can be used to export a set of appointments from an Outlook Calendar to the iCal format. The end result is a *.ics file. My motivation for developing this macro is that I am not happy with the "Save As Web Page" option in Outlook. The main problem is that it saves all appointments associated with an Outlook calendar. I would like to only export appointments of a selected category or categories. I also wanted to be able to view the exported calendar using PHP-iCalendar, which has a far superior appearance when viewed on the web.
Thanks, I tried the outlook2ical VB Tool and it worked GREAT! I had 2007 calendar items in Outlook, tried moving to a web based calendar and found this to be the ultimate way. Dang MS doesn't want to support anything but their own propriatory format =P
I installed and ran the outlook2ical export macro yesterday. As I ran it, outlook warned me that a program was trying to access my address book. I have never seen that warning before (used outlook for several years!). I assumed this was in order.
Because it didn't work exactly as I wished (Oracle couln't read the file .Ics file) I also, afterwards, downloaded an ran the "outport" program. It was from sourceforg and mentioned here. This program worked ok.
However, now (since I ran these 2 programs), every few minutes I get an outlook warning that a program is accessing my address book. This occurs without any export tasks any longer in process. It sounds like a virus. Any comments?