The "authority" quoted in the Yahoo Answers thread is Jack Chick, who's rapidly anti-Catholic (see http://www.chick.com/catalog/tractByKeyword.asp?Subject=Cath...), claims Dungeons and Dragons involves true demon worship, etc. - he's pretty much anti-anything that isn't hard-core fundamentalist Christianity.
The Vatican is certainly wealthy, but Yahoo Answers should never be used as a "see? evidence!" item.
Ok, I googled again for you. Here's an expert from Georgetown U quoted in a Google Answer: http://answers.google.com/answers/threadview?id=54617