I'm looking around for good software to simply edit existing PDF files. Adobe refuses to use the word "Edit" on any of their comparison matrices so I'm at a loss as to which app I really need. I can get standard for $100, and Pro for $150, but it will only be used to grab existing PDF's and delete some stuff, add some stuff, and alter other stuff. Any tips on what I need? (Any tips on free software that does the same thing?) All of this will be done in Windows XP.