rcweb currently serves static HTML (.html) pages, server side includes (.shtml), PHP scripts (.php). There are significant difficulties with securing non-trivial CGI scripts which would want to modify files in AFS. Any file type may be placed in the DartmouthShare folder.
For additional information, see the general advice on Web sites for Dartmouth departments and Personal WordPress sites at Dartmouth, and Personal web sites hosted at cPanel: host.dartmouth.edu.