Ok, i revoke everything:
Formats natively supported are: .AZW, .PRC, .MOBI, .MP3 and .TXT
that's not so cool.
800x600, 6", with 4 gray levels sounds like first generation eInk, though.
don't forget to check out:
http://www.amazon.com/help/kindle every now and then. Until now there nothing online in there, but it's mentioned in the manual.
seems like we have a tendency to double post :P