trying to fresh install and update

I have uninstalled and reinstalled corel x6, I was having problem with doing art at work and coming home to finish and they art would not load, I tried updating and get an error message, so then I uninstalled and reinstalled and tryin to update but I keep getting and error,    the following occurred on the file 'C:\Program data\CorelDraw graphics suite x6.1\16.1\DRPCUNLR.DLL'    ACCESS IS DENIED   NOT SURE IOF THE SCREEN SHOT IS GOING TO SHOW UP