Perl and Network

Hi, I have an Apache server installed in Red Hat Linux in an intranet. I also installed Perl 5.6 + MySQL + PHP . The first problem I encounter is that, I put a Perl file in the /usr/local/apache/htdocs folder. I want to test whether Perl is working or not. This in the server side. Later I try to acess to this file from a client . When I click the file, a message promts up asking me(assume the user) to save the file in which folder. Why this happens? It suppose to execute or read the file instead of saving the file. Even the same problems occur when I try to read this file from the server side.

My next problem is relating to network or more precidely about the IP address of this server. I did obtain an internal and an external IP address from the Network Administrator. Why can't I access this server from outside the intarnet?

The reason i mention this is that, I'm developing a meta search engine using Perl. As known meta search engine need to query major search engines. When i enter a query and press the submit button, nothing workd. I already check the code many times, no problem. I suspect this might related to the status of the Apache web server.

Thanks in advance.