is there a way to see only the Message Queuing section of Computer Management?

Follow mark's advice and save a new .msc with Computer Management in it. Then open that MSC, expand Private Message queue or whatever section you work in regularly in the left treeview and when you exit, it'll ask whether you want to save the .msc - say yes and next time you open it, it'll open to where you were when you saved it.

If you fire up mmc, and then File->Add Snap-In, you should see all the snap-ins there including MSMQ (Message Queueing, at least). Then you can save the resulting console file and launch it. (I don't have something with MSMQ available to check if it's there).