If you have to transfer your Firefox bookmarks from one computer to another and you’re working on a locked down company machine, or you like doing things this way, here’s how to export your Firefox bookmarks:
If you haven’t already done so, open Firefox.
From the menu at the top of the screen select Bookmarks.
Choose the Organize Bookmarks option.
In Firefox 3 this opens a new window called Library. In older versions of Firefox it is called Bookmarks Manager.
In Firefox 3 chose the Import and Backup menu, then Export HTML. In an older version of Firefox you need to choose File then select Export.
This brings up a dialogue. From here save the bookmark.html file wherever you wish. Some people prefer to save to the Desktop. If you’re saving to a USB memory drive then browse through the folders to find the drive.