Yes, you will have lounge access in ZRH as a Continental BusinessFirst ticketholder. At check-in, the agent will issue a lounge invitation. If one isn't issued, request one. This invitation will be collected upon entry at the contracted lounge Continental uses. I believe it is operated by Swissport (but I can't recall for certain). The lounge is nothing special.

Continental Presidents Club members receive no lounge access in Zurich based upon their membership.