When I read the initial post, my first thought was "why not ask Charlie?"
Then I read the first response and see where Charlie is laying the question off on everyone else ... Charlie, however, seems to have the makings of a true business executive and has delegated the question to everyone else ...
Best way to learn the answers without revealing too much newbie naivete is to do a search of all posts for ISOM, cello on or cello off, etc ...