Husky Jim,
Sorry -- my post was ambiguous. I was referring to the actual, hard copy Rough Guides, which are travel guides. These are found at most bookstores and often at airport bookstores too. They do have a website, but obviously do not give all the information in their guides away for free.
If I were you, I'd go to my local Border's and check out the guide for the destination to see what they have re: religious services. Good luck, Casimir