Where does Thunderbird store its data? Solved

[#1]

I have a Win 7 Media PC that I use Thunderbird as my POP 3 downloader, my Motherboard has done a mischief and has to go away for repair, Got most of my data backed up but not all the Thunderbird.
I have the SATA HD in a cradle on a Win XP, where are the e-mail files? and what are the file extensions?
Ta in expectation

[#2]

I have XP Pro and the Thunderbird mail is here
C:\Documents and Settings\username\Application Data\Thunderbird\Profiles\iwn8n73e.default

[#3]

Except yours will have different letters and numbers in front of ".default". If you are looking to copy the data from a Win 7 HD you will find it here,
C:\Users\[your username]\AppData\Roaming\Thunderbird\iwn8n73e.default

[#4]

Thanks Denzil,  got the files off the SATA HD, now to put it back and send it off  - covered on warranty post free