Hi I'm a newbie to Office development but not dot.net. Is it possible to send appointments created in one program to show up in a user's outlook calender who uses Exchange Server? -I'm looking for someone to point me in the right direction.... (I would need to send appointments to different users, presumably with their security credentials etc in order to get it to show up in their outlook calendar.) Is it possible and what are my best bets for technologies to use? Like Exchange Web Services? (CDO looks like it's out...for 2010) or MAPI? Outlook Object Library? Using outlook 2010 and not sure about which version of exchange server. thanks VERY much, Tony C.