Save Mozilla profiles and mail and migrate to another machine

Mozilla profiles are stored at C:\Documents and Settings\\Application Data\Thunderbird\Profiles by default. There will be a random-named directory inside the Profiles directory. That's our profile directory. Save it somewhere (including all mails) and move it to another machine.

In another machine, install TB and then goes to the Thunderbird directory in Application Data. Open profiles.ini and replace [Profile0] section with

[Profile0]
Name=default
IsRelative=0
Path=D:\Documents and Settings\\Application Data\Thunderbird\Profiles\8c9mmh0q.default

In this case, I place the old profiles at D:\ so that it will not ever lost again.

Now, restart Thunderbird. This time thunderbird might crash, dont' worry. Just remove all extensions and re-install it and everything should works fine.