sorry, i meant to post that i am, indeed, using windows -- vista, to be exact.
thank you soooo much for the link, carl -- i'm off to grab it now, and will report back on my (hopeful) success.
edit: hooray! i downloaded it, unzipped it, moved it into my ebooks folder, and all seems well... well, except i'm not sure what to do with it now, lol. the main reason i want it is to change titles in .prc files, but when i try to run/open mobi2mobi, it flashes a dos-type screen for a second or 2, and then doesn't do anything else. i also tried using the mobi2mobiGUI from the forums, but am unclear exactly what to do with that, too. >sigh< the more i mess with this, the more dummy-like i feel!
i'd appreciate more guidance, even if it's a "no, no, dear, look over HERE!"