Welcome to the list. If the Kirkmichael you seek [which is what I
suspect] is the one in Dumfries and Galloway then you are not on the
correct list but need the one for D & G.
You are correct that there are several Kirkmichaels in Scotland, in fact
Kirkmichael is in Perth & Kinross, Dumfries and Galloway & South
Cummertrees is in Dumfries & Galloway and is only 20miles away from the
Kirkmichael in D & G. Cummertrees to the Kirkmichael in South Ayrshire
is 70 miles.
There is How to Guide for researching in Ayrshire on the GenWebPage,
this will give basic advice for researching in Scotland including how to
obtain civil certificates, OPRs and more.
There are GenWebPages and a mailing list for D & G. Go to
Rootsweb Mailing Lists