Seeing my subfolders on the Mac

Malcolm <[email protected]>
Newsgroups gmane.comp.mozilla.devel.macosx
Organization Another Netscape Collabra Server User
Message-ID <[email protected]> 
When I switched from being a PC guy to being a Mac guy, I moved my 
wife's Netscape 4.x mail from the PC to Mozilla on the Mac. No problem! 
It all showed. Everything worked.

When I moved my Thunderbird mail+news from the PC to Thunderbird on the 
Mac, all it showed was the email accounts with NO subfolders and no news 
accounts at all.

What kind of file surgery do I have to do to see all my subfolders and 
news accounts?

TIA
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