You could send them a letter telling them they do not have the rights to use the images and would they like to buy the rights. There is a fat chance they do not have the original document you supplied to company A ...see if they bite, they might if you price is reasonable rather then get into a...
I used a can lid and drilled a tiny hole in it and glued it to a camera body cap with a larger hole. I think the hole needs to be closer to the sensor.
I am on a Mac Pro and when I had 2 gig I had crashes all the time. After upgrading to 16 gig I have no problems any more and can have many programs open at a time.