Anything run by mod_perl runs under the web server's username, and environment variables and functions remain active in the web server even after your scripts have exited. This can open the possibility of trojans or privacy leaks, and is unacceptable for a multi-user environment. You must use the external perl interpreter as usual.

Again, everything is run as the web server's username, which is not secure. You should use the external shell instead, and run your php as CGI. (We do support PHP using the external shell interpreter)

Sub-webs are rarely useful, and are difficult to configure. They also can mess up your web site if not used properly. Instead of creating a sub-web, just create a normal subdirectory.

We do not support Windows NT on the server side in any way.