This book would have been useful to me several years ago when I ran Windows XP, but since I have upgraded to Windows 7, it is virtually useless since this book doesnot cover the Windows 7 OS registry. Amazon.com is now giving so little infomation about the products it sells, it is practaclly impossible to choose a product thatis specifically what one is seeking. On the page for this book it should have been explicitly stated that this book covered the Windows XP OS and nothing else. Tonot do so is tantamount to fraud.