Thanks all,
There's a wealth of good solid info here.
I'll have to give it a bash and see what comes out the other end.
I've an idea for a great portrait and I reckon matting it will just add the cream.
As soon as the powers that be legislate for 25 hours per day, I may have time to make a dent in my to do pile.
Once again, thanks all for your kind and informative replies.