I'm a Blackberry user but my company does NOT have Microsoft Exchange. I'm using Blackberry's BIS system. I have a question regarding how the iPhone's calendar works. I regularly have people send me an invitation to a meeting, which is sent to me via Microsoft Outlook. The invitations are sent to my Blackberry and, from the Blackberry, I can ACCEPT the invitation and it shows up in my Calendar. Assuming I an NOT connected to an Exchange server, and a Microsoft Outlook user sends me a calendar invite, can I ACCEPT the invitation from the iPhone or can I only do so when I access my Microsoft Outlook from my computer? Thanks guys.