FBReader won't access my micro SD card

[p3aul]

UPDATE: I figured it out! he it is for future ref:
File Tree->Device->Storage->sdcard_ext That will give you the root of the sdcard and a folder list if you have placed any there.
Thanks,
Paul

Device: Acer 830 Tablet running Android.
App: FBReader ver ?

I try to access by doing this:
The last option: Browse File tree.
Last option:Memory Card. I get presented with a bunch of folders that aren't even on my card and none of them are the folders I placed there with my PC

I have done this before but I can't remember how now. Any help will be appreciated!
Thanks,
Paul