content: I bought this book because I am working on a software project that involves Exchange 2000. However, the book's author does not use proper terminology. For example, they talk about SAM replication times but Exchange 2000 uses Active Directory. They talk about site connectors but Exchange 2000 uses Routing Group Connectors. I know this product is still in Beta, but RC2 is feature complete. This book could have been better. Only buy this if you absolutely need to implement Exchange 2000 ASAP. If you read Microsoft's documentation first, you can weed through this book for more details.