@xuggs: RWFarley has wiped PC and forgotten Secret Phrase, so he cannot take bookmarks to PC from Sync; if he makes new Secret Phrase, he deletes all data from Mozilla Sync server; the only place where he can access his bookmarks now is N900 (PC wiped, server encrypted with forgotten Secret Phrase).

@RWFarley:
All settings and bookmarks and extensions of Fennec are stored in /home/user/.mozilla/fennec
I hope you can copy this folder and all its contents to a safe place
Like in XTerm

cp -R /home/user/.mozilla/fennec /home/user/MyDocs/.documents/fennec

Then the backup will be stored in Documents->fennec. You can see it in File Manager. It can then be accessed from PC by USB in Mass Storage Mode.

In Firefox 3, bookmarks are stored in the places.sqlite file. As you have nothing to lose on PC, I recommend you to try and copy places.sqlite from Fennec on N900 to Firefox on PC. It's stored on PC in folder

%APPDATA%/Mozilla/Firefox/Profiles/xxxxxxxx.default

and on N900 in directory

/home/user/.mozilla/fennec/xxxxxxxx.default

You can try copying "places.sqlite-journal", together with "places.sqlite", to your PC.