The new 0.0.4 version is really nice, and faster. Now the dictionary function is working, and it uses the same dictionaries of FBReader! Just be sure to substitue the default skin's contents (located in folder:system\share\cr3\skin) with the ones in this link:
http://narod.ru/disk/10402329001/cr3-pb-skin4.zip.html
I think I'm going to make CoolReader as my PB360's default reader, since it has better formatting than FBReader. Thanks!