WebDAV HTTP Auth to RADIUS, possible?

[Michael Check]

Is it possible to set up an Apache 1.3 server with WebDAV to
authenticate to a freeRADIUS?

Ideally, I would like to tell the Apache directives to look at
freeRADIUS for authentication using the httpd.conf file.

Has anyone ever done this or able to point me in a direction?  Is it
even possible?

We're using freeRadius 1.1.0 on OSX.4, successfully authenticatiing
off an Active Directory master.

Thanks in advance,

Michael Check