How do edit a .mobi file?

[ens04]

by that I mean I have a couple of books on my kindle but the authors name is last name, first name. But how can I edit that so that it is First name Last Name?

 

[sanman6046]

Calibre, in my opinion is the best software to edit any data on .mobi files.
calibre - E-book management

 

[Mike77]

Calibre is outstanding. You can also use it to edit the files so they end up under books and not docs on the Fire.

 

[TheDroidLurker]

another +1 for calibre.