Nimda information

I'm not sure that this is useful or not, given the large number of
advisories that *eventually* made it out, but this is an attempt to
collate the known information about Nimda - it's based on information
collected here, my own findings, and information taken from the various
advisories that were released.

Feel free to e-mail me any corrections/updates, and I'll keep the page
up to date.