In early August I wrote: “… the only Web browser that I know of that supports annotation is the W3C’s Amaya.”
I am delighted to report that there is a Firefox plug-in for annotation:
This is the the Annozilla project, designed to view and create annotations associated with a web page, as defined by the W3C Annotea project. The idea is to store annotations as RDF on a server, using XPointer (or at least XPointer-like constructs) to identify the region of the document being annotated.
It’s aligned with the W3C – it makes use of W3C standards like XPointer and RDF.
This is precisely what I was goading Google into doing with Google Notebook.
Ian Lumb's Blog 
i realize i’m a little behind in thanking you for this, but thanks!
now about that firefox 2.0 support?
I’m using Annozilla with Mozilla Firefox 2. I did, however, have to re-install all three plugs-in.