Resolved Smart Folder Issue

Hi All, .............. I originally installed Thunderbird version 3.0 and removed it. Then I installed TB version 2.0.0.23. This version has supplied an unwanted additional folder, Smart Folders. In trying to determine how to remove this folder I came across the following in Mozillazine Thunderbird:

That's where I am now. I need help in going into the prefs.js file, a reasonably unknown section for me.

 

I think that I have an answer to an unwanted Smart Folder for TB version 2.0.0.23. The solution is in the Config Editor, as from Tools, Options to the Config Editor button. Clicking this button brings up the "about:config" screen. Move down to the mail.accountmanager.accounts and remove the ,account3.