I have tried every method I've found on Mozilla threads from modifying the profile.ini file to merging the profile folders, etc. I have the original Thunderbird profile (including all folders, inbox, sent items etc) on the original hard drive that is set up as a secondary hard drive (E:) in the new computer. No matter what I try, I can't get Thunderbird to pick up that old profile. I've uninstalled and re-installed T-Bird nearly a dozen times now (and deleted the folders from the AppData folders) to try to get it to pick up the original profile. Any suggestions????