Where can I download Sophos Anti-virus and how do I install it?

Sophos Anti-virus is offered to all faculty, staff, and students at UCLA. Sophos is offered by BOL and can be downloaded at this link:
http://www.bol.ucla.edu/software/sophos/

The instructions to install Sophos for XP and 2000 can be found here:
http://www.bol.ucla.edu/software/sophos/docs/winXPinstall2.html

All other OS installation instructions can be found on the download page.