associating an application to open a file

[Joanne]

I've mistakenly associated Photoshop as the application I
would like to open all .pdf files with. (I was initially
prompted to make the association via a dialog that came up
when I first tried to open a pdf.) Now I would like to
change that to make acrobat the default app to open pdf's.

How do I do this? Can you help?
Thanks

 

[Guest]

Open windows explorer and click on tools, then folder
options. You will see a tab called file types. This is
where you can change what programs the Operating Systems
associates with file extensions.