Choose Adobe Reader or Acrobat as the default PDF viewer (Acrobat 6.0-7.0, Adobe Reader 6.0-7.0 on Mac OS X)
You can make Adobe Reader or Adobe Acrobat as the default viewer for PDF files by changing the file association in Mac OS X.
Note: The default viewer for PDF documents in Mac OS X is Preview.
To change the file association for PDF files:
1. Select any PDF file and choose File > Get Info.
2. Choose the application that you want to open PDF files from the Open With menu.
3. Click Change All, and then click Continue.