This zip contains 101 Arguments Against Christianity in addition to 101 Contradictions In the Bible. The zip file has been scanned and is free of viruses and trojans. Note: You can tell that this is the "real deal" by the date of this description: 2/12/07 U.S. Mountain Time. If a newer version is released, you may be able to tell if is a fake by a notice on the website mentioned in the zip file.
So, for example, if a new version is planned for upload, you can download this original first, then look to the site and find any newer file by it's upload date or planned upload date.