- go to TW google group . . . and click “download”
- go into firefox , “file” menu, “open file”, and choose the .xpi file you just downloaded
- when you choose to open that file it should automatically give you an option to install the addon/extension.
to work on a TW stored on the web somewhere, I think UploadPlugin from BidiX is needed. this plugin uses a store.php file.
onwards i explore
when you get the thing installed check out the configuration guide