Hi. Sorry for my english... Root run means you're boot as Root, as system admin. You'll need to install rootsh before: be carefull, you'll be able to do "everything" in your N900... To place the 2 .deb in a folder, you can use the app Filebox, with more access (you can be "root") than the original file manager, or you can use "Winscp" on your computer with "Open ssh" installed on your phone, for exemple, with wifi connexion. If it's well done, your phone contact list will sync with your carkit everytime they'll connect together. Hope you'll understand everything! And don't feel old, I'm from 1966...