however there is one user (User A) who gets the appointment as a text
message.  
I thought I had this problem solved by doing the MS updates.

This seems to be a problem with User A getting meetings sent to him from
only 2 users (User B and User C).  

All three users have Windows XP SP2, Outlook 2003 (11.8002.6568) SP2.  I
installed and ran MS new Anti Spyware (Defender 2 Beta) on user B systems,
however the problem still exists.  

I had User C send me a meeting and it came up as a meeting and not as a text
message. which is good.

I had User A send me a test meeting message and I received it as a meeting.
I sent User A a meeting and User A received it as a meeting.

I hope there is a solution out there that I have not tried.  Any assistance
would be wonderful.

Recap:
User A - receives the meetings from User A and User B as text
User B and User C are sending User A meetings.  how ever they can send
meetings to other users and they meetings come up as meetings and not as text.