there are two ways to get the earlier filters into FF2. you can simply download them all into FF2 from the online filter library or you can copy them over from FF1 to FF2. but, you'd need to supply what o/s you're running as the directories are different between the various operating systems.
as for the filter library browser, that's how i download all of my filters. it's stated in option as 'obsolete', but that's not quite right. just re-enable it in the options and when you click 'download filters' in the GUI, you'll get the filter library browser.
If wishes were horses... there'd be a whole lot of horse crap to clean up!
Craig