Good points, Bigkahuna and 800 - of course, it isn't entirely black and white - I was trying to make the point that the possibility should have been thought about first - but not very clearly! Of course, if you are unsure, go around, and remember that the holding pattern is your friend while you get your head clear. There is a fine line between keeping the company happy and staying alive, and you should always of course opt for the latter!
phil