Dear Dave,
I know the Q. wasn't directed toward me but I believe you will find it at:
http://www.staatsarchive.niedersachsen.de
Go to:
Online-Findbuch.
And then:
zuruck (search)
Use wildcard [%] to replace unknow, or letters that have umalaut [spelling].
Barbie
Here is another website that might be of help for some researchers:
www.KGVerband-Meppen.de
choose Familienforschung.
Has link to a page which will tells what years (before 1875) are available for the churchbooks of the various parishes in the diocese of Osnabrueck.
Dioezesanarchiv, Bistum Osnabrueck
Grosse Domsfreiheit 10
49074, Osnabrueck, Germany
Telephone: (05 41) 3 18-418
Fax: (05 41) 3 18-425
Nieders�chsischer Landesverein f�r Familienkunde e. V
http://www.familienkunde.de/f2.htm
Most of these links I have found through this wonderful list.