just a heads up that Kindle is no longer accepting
from Amazon DTP support...
"We're working on a policy and procedure change to
fix some Kindle customer experience problems, such
as multiple copies of public domain titles being uploaded
by a multitude of publishers. For an example of this
problem, do a search on "Pride and Prejudice" in the
Kindle Store. The current situation is very confusing for
customers as it makes it difficult to decide which "Pride
and Prejudice" to choose from. As part of this change
in procedure, we are no longer accepting public domain
titles through DTP."