XBMC not using data I already scraped. Downloading all new info?

I have finally got XBMC up and running on my AppleTV. But prior to this i cultivated thousands of movies onto my NAS and painstankenly organaized them as follows:

>Movies
>---Movie Name - Date
>-----Movie Name_IMDBNUMBER_RESOLUTION.mkv
>-----Movie Name_IMDBNUMBER_RESOLUTION-fanart.jpg
>-----Movie Name_IMDBNUMBER_RESOLUTION.tbn
>-----Movie Name_IMDBNUMBER_RESOLUTION.nfo

>---Movie Name - Date
>-----Movie Name_IMDBNUMBER_RESOLUTION.mkv
>-----Movie Name_IMDBNUMBER_RESOLUTION-fanart.jpg
>-----Movie Name_IMDBNUMBER_RESOLUTION.tbn
>-----Movie Name_IMDBNUMBER_RESOLUTION.nfo

ETC

I am sharing everything via SMB from my nas. As you can see all the movies and associated imdb info files, art etc are all included in the "Movie Name - Date" folder.
I have also used this setting in the xbmc client on the appletv2 so that it would know to look inside.

However, as soon as I added the share and logged in (using a ro account) it started downloading the metadata and images for all the movies.

The whole reason i organized everything already and downloaded all the files, was so that xbmc would just use the files that are on my Nas. Sometimes XBMC picks the wrong movie, so that is another reason I prefetched all the data for it. Also some movies default poster I don't like so i found alternates that i do like.

So why would XBMC not be using the info that i already scraped for it? Why is it redownloading all the info to populatye it's datbase with? is there a way to force it to use my info for the movies and my poster, fanatrt etc?

Thanks.

Awesome product by the way!