I'd like the script to handle admin authentication internally, prompting for a password (configurable in setup).
I've asked users to add a button to their pages, telling their users the site is scanned and known to be virus-free. Instead of that button linking to us, it should link to their installed script.
The script by default will display a summary page, explaining last scan date, results of that scan (hopefully clean!) and a brief summary of what it all means to the general web visitor (education is a good thing).
At the bottom of this page will be a password box for the site admin to login.
It will also contain a small link back to the project's web site at http://phpantivirus.sourceforge.net/
Ideally the link button for the users' sites could be generated on the fly to include live information, but this would require GD Lib and possibly other goodies - generally not a requirement of your average anti-virus package!