Did you add the necessary registry value in the Office\11.0 hierarchy? Did you read this part of the article:

" This fix will only permit you to preview custom forms that do not have Visual Basic Scripting Edition (VBScript) code in them."

--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx

wrote in message oups.com...
Hi all,

I'm having the problem whereby I want to allow the preview pane to show
the body text of a custom form I've written (none of my code alters the
message text) but outlook tells me I can't because it contains active
content. Fair enough, quick google reveals this kb article:

http://support.microsoft.com/kb/331788/

however it applies to office XP, and I'm on 2003. I've applied the
regkey fix the article describes but it doesn't seem to work so it
hasn't carried through to the latest version. Either that or I've done
it wrong!

Any ideas/pointers?

Thanks,

Kristan