I have just move from Eudora with little trouble (thank you). I wanted to move my T-bird data folder off my boot disk because it is smallish, and tried twice, following your help instructions very carefully. Both times, Thunderbird wanted me to create a new account, and I finally had to reinstall T-bird from the start and import Eudora data again. Now things are working more or less but my data is still on a crowded disk It would sure be nice if T-bird let you select what data to use through a menu as most other software does. But failing that I would like better instructions on how to do it.