Yes it kind of a confusion at times on what people mean by database and instance. Here are some of the past threads that is worth the spending some time to look
[url]http://www.dbasupport.com/forums/showthread.php?threadid=3421[/url]


[url]http://www.dbasupport.com/forums/showthread.php?threadid=3490[/url]


[url]http://www.dbasupport.com/forums/showthread.php?threadid=3781[/url]

Good luck.

Sam