Real happy to find this forum and the Perl and GUI tools.
I have a number of PDB files that I renamed to PRC (hope that wasn't a dumb thing to do) to so I could edit metadata (like everyone else wants to do it seems) to get my Christmas present Kindle to show the books correctly.
mobiperl-win-0.0.41.zip and Mobi2Mobi_GUI_v016.zip
Net3.5 and everything else on Vista is current
GUI convert 'seems' to go OK, but MobiReader won't open the .mobi file, and Kindle says it's currupt, BUT the Kindle it does show the Author and Title I put in the GUI
Attached are the PRC and the MOBI files

... please
Thanks
Paul