[Braillenote] unpacking books

[tina birenbaum]

Hi.  I've just downloaded several books I'd like to read and they came with a 
.rar extension , so I renamed them with dot b k S only to be told they cannot 
be unpacked and i get the error code 202.  So, I renamed one back to the 
original extension which i have no idea what it means, but I can't read it 
either.  Any ideas? I unpacked a book earlier with no trouble at all