Knowledge Base Article
Adobe Acrobat PDF buttons in Outlook 2000Synopsis
Customer has Adobe Acrobat PDF buttons in Outlook 2000 and doesn't want them.
Solution
Start regedit. Get to the key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Office\Outlook\Addins\PDFMOutlook.PDFMOutlook
Change the value of LoadBehavior from 3 to 2.
References