I think this is a mixture of most things already covered in comments, so perhaps I'd better just view this and not comment.
Also, sometimes the subject isn't much clue.  If somone heads their thread "Help needed please" or "advice needed" I will usually look and see if I can.  But we're a diverse bunch and it could be mammograms or Big Shot (to follow a train of thought!!) , I could try to help with the second but not with the first.

Interesting thread though...