Artico - Sorry, and I do not wish to start a flame war, but the second paragraph of your reply to RDS's attempt to assist seems unnecessarily lacking in grace or good manners. It is not the way to encourage others to offer help in the future. I see nothing in your post that suggests you were seeking a particular type of bridge model, and if you were, it might have been better to say this in the first place, rather than gratuitously rebuke someone offering genuinely intended assistance.