Yes!!! The form is the reason. iPhone does not recognize custom forms!! I follow the URL (
http://support.microsoft.com/kb/201089/EN-US/) to download a Microsoft macro to change the message class for all exisiting events, and now, all appears in my iPhone!! That's why it does not work for some people because some company like mine has a customer form.
I am so happy. Hope this helps others too. I literally spent 2 days on this silly thing!
Is there a way to post this to Apple so that they can fix this in next iTune release?