How to set defaults

Due to system problems, the Corel X3 package had to be reinstalled.  I was not there, but noticed afterwards that everything had been set back to the original default settings in the various applications.  In particular, Paint now shows everything in inches, when what I need is pixels to match things up on the company website, my primary job.  So, I've been manually setting resamplings, etc., to pixels, instance by instance.  I find nothing anywhere in the help system that even recognizes the term "default."  Can someone please advise me on how to set the defaults?  Thanks.