Forgive the dumb question, but...I have used Macs for years, and currently use a Mac Mini, at home for personal stuff. I am about to change careers to do freelance writing for corporate clients. Will there be any readability or compatability issues between the documents I create (mostly in Office) on my Mac and all those PC users out there who will be reading them, returning them for rewrites, etc? Is there anything I need to know, or adjustments i need to make? Is there any reason I would have to own a PC as a second unit?