Outlook 2000 users:
I've searched for months and months. outlook 2000 uses a different format, so not much is friendly with it. Some companies claim 2000 support, but I have only been able to find one that actually works, and has a free trial to test....
ical4OL
I work for a large company that is thrifty, so they will never upgrade us out of outlook 2000 unless we are forced
