PLEASE HELP! open PDF files in Outlook

whenever I tried open PDF file in outlook, it always tries to open up with SAFARI which turns out displaying black screen.
I do have Adobe Reader installed, how do I open this? How do I open PDF files in outlook with adobe reader in pc side?
How do I assign Adobe reader to PDF in window side? Can some one walk me through?

Please some one help here.
Thanks in advance.

 

Change Default App for All Files of a File Type:
1. Ctrl-click on the file (*.pdf)
2. Click Get Info
3. Under Open With pick the app that you want to become the default (Adobe Reader (Windows))
4. Click the Change All button
5. Confirm your decision