Right click the game in the Steam list (your library)
Click "Properties"
Click "Brows Local files"
Viola!
This only works if you downloaded the game through Steam...
Find "Steam" on your computer and launch it.
That will take you to the game files.
The Dokis are in /characters folder
GOOD LUCK!
FYI...
the firstrun file (you need to delete this to start a whole new fresh game) is in /game folder
Any mods also go into the /game folder