Apache Security On OS X 10.3

Sherry has been unable to view my travel calendar even though no one else has had any problems. Today I figured out why: she's the only one who's been trying to access it using Internet Explorer. Apparently, Internet Explorer 6 is not compatible with the Apache security implemented in mod_digest. Supposedly, a newer version of the module named mod_auth_digest is available, but it is not part of the Apache build delivered with 10.3. Now I'm facing the prospect of trying to upgrade to a newer version of Apache (I think I'm running 1.3 but I'm not sure). No idea how much of a pain this would be. (Thanks to this post.)