G'day and thanks very much Dick for another way of stopping the click - I did find it thanks to a search here, under Servers in the ACP preferences - just a check box for "Click sound on request"
At the time I couldn't help smiling - that I'd managed to migrate successfully something which I thought would take "several blue Moons" to get right and in the end stumped by a clicking noise!!
Anyway, all looks good at present - I've even wheeled out the Win 7 "ole faithful" box into the paddock

cheers for now, Merv