Outlook follows you default configuration of Windows. How to change it
depends on your version of Windows.
Windows XP and previous;
Control Panel-> Folder Options-> tab File Types
Windows Vista and Windows 7
Start-> Default Programs-> Associate a file type or protocol with a program
--
Robert Sparnaaij [MVP-Outlook]
Coauthor, Configuring Microsoft Outlook 2003
http://www.howto-outlook.com/
Outlook FAQ, HowTo, Downloads, Add-Ins and more
http://www.msoutlook.info/
Real World Questions, Real World Answers
-----
"kdassociates" <(E-Mail Removed)> wrote in message
news:27791C46-C6CB-4E0F-ADB4-(E-Mail Removed)...
> When I have a PDF file attachment in outlook I double click it and
> microsoft
> picture viewer comes up and not adobe viewer. How do I change that