[Plugin: NextGEN Gallery] Is this Structure possible ???

Hello,

I’m trying to make a page with my photo’s with the following structure:

First some folders which are the countries i visitted.

Then in each folder i will make some sub folders whith the places i visited.
And also in this folder are the remaining pictures which cannot be placed in a subfolder.

And example of what i whant can be found here:

http://www.michielvanaalst.nl/traveling/gallery2/main.php?g2_itemId=2492

Subfolders and some pictures in the same foler.

Is this possible??