Googling windoc pro brings up warez, cracks and serials websites. Can't be good.....
That annoying popup could be adware or a virus, imitating Antivirus warning messages, and once you click to close it, who knows what just happened. so don't click to close it, try Alt-F4 instead.
Like ScottGem asked, what does the message say? and what options does it give you?