Just saw a post by Cosmosis on the Isratrance forums pointing to his website and when I went to have a look there saw that he has put up his Virus B patches for download.
Not sure if it is everything, or what it covers as I have only just found it, but it has got to be worth taking a peek at.
http://www.cosmosis.co.uk/drbill.html
He also has some interesting info on producing trance music etc. Good reading.