From: Brian Tillman [MVP-Outlook] on
"Hotshotx" <Hotshotx(a)discussions.microsoft.com> wrote in message
news:D08F2A99-7CA5-4424-A3FE-DC3AAE8A0696(a)microsoft.com...

> Well, the problem is we upgraded them with new pcs. Some with Win XP & some
> with Win 7. Those outlook with winxp able to view properly only. All are
> installed with the same symantec antivirus for client & office 2003 sp3.

This says to me that perhaps your Symantec client isn't compatible with
Windows 7. Symantec products have a LONG history of not working well with
Outlook. Try the experiment Robert suggested and report back.
--
Brian Tillman [MVP-Outlook]