Does anybody know which anti-virus software programs are installed on the Lunarpages host?

If so, how would I invoke it from a Java Servlet or CGI/Perl script (ie. path of program, and required command line parameters)?  What output/return code would I need to look for to indicate if there was a virus?

The reason that I am asking is that our website allows for an author to register with us and submit their manuscript in MS-Word format online.
The file is stored on the website and can be accessed by either our Administrator and/or Editor users.

Currently, the responsibility is on whomever views the file to ensure that there is no virus in the file.  I would like for the application, on submission of the form by the user, to scan their file and then immediately reject it if their is a virus.