Depending on your local laws, it could be a violation to remove the DRM.
For that reason most sites like this prohibit any posting that might be taken
as providing material support to an illegal act.
You will have to find a program that can convert an "ereader" file 2 the "html"
file structure, on your own. You might try a Google search.
Caliber is one of the tools that has its own forum here, there are download links
in that forum, if I recall correctly.