Hello. My name is ***** ***** I will be assisting you today.Start off by taking your Thunderbird offline or moving the current emails to a local folder within Thunderbird so you have a backup.I would then setup your Eudora settings to use imap, so that all your emails will sync to the server. Then do the same in Thunderbird. From there you can move everything over locally in case you're wanting pop3 setup for your email account.I can be available tonight for a remote session if you would prefer that.
Checking in to see if you still need help with this issue, if so please reply at your convenience