Apps data location ?

[Guest zomgbugs]

New user, so newb question. :mellow:

I've installed an application called "Sudoku 10,000" which lets you import your own grids. You just have to place the grid files in the data directory of the app. The problem is that I can't find where this data directory is. There's no new dir on my SD.

Since I noticed that apps2sd'ed apps appear in a dir named "asec" that doesn't show up when you connect your ZTE to your PC, I was wondering if the apps data were "hiding" somewhere as well.

So, my question : where can the applications place their data ?

Btw, the app was auto installed on the SD card ; I'm using Swedish Spring RLS5 (so, rooted), NO sd-ext, and File Expert as a file explorer (allows to see root & everything).