Outlook doesn't control this but Windows. Verify your default handler for
pdf-file in Windows.
Assuming Windows XP;
Control Panel-> Folder Options-> tab File Types-> select PDF-> button
Restore
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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
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"RSax" <(E-Mail Removed)> wrote in message
news:903955C4-D07C-4101-97BB-(E-Mail Removed)...
> When I try to open pdf files in Outlook 2007 it launches Word 2007 instead
> of
> Adobe Acrobat. I tried reinstalling Acrobat. No luck. I copied the pdf
> to
> my desktop and it opened fine with Acrobat. What happened to my Outlook
> 2007. It was working just fine last week.