I accidently set my default application for PDF to OpenOffice, it was a royal pain, you know where..:)

After googling, I came across many articles which explained how to setup a default application, but none of them explained how to change it.

Here is a simple way to change it. You may already know this, however this is for someone who gets stuck and doesn’t know how to change this.

Right click on the file, that you want you want to change the association.

Select Properties-Open With and change the default application.