Urgent Help! HTTP/1.0 501 Not Supported

I used Javascript to create an email form for this project.  I can send out a message to without having  problem except the formating stuff.  The "Message" TextArea in the form is in html format.  So, when I send out a form it is going to convert some special characters in the TextArea into something else (e.g. convert all the spaces to + signs) .  

As I know, I need to have an input handling program to convert the html formated value back to what it is supposed to be.  Therefore, I downloaded a Perl script (*.pl) on the web and put it into the cgi-bin directory on the web server.  The problem is, when I submit the form from the browser, it gave me the follow error:

HTTP/1.0 501 Not Supported

1. The form is in POST method.
2. It is using FrontPage Explorer 98 (version and WWW service in IIS3.
3. the cgi-bin directory is already marked as "enable script running"
4. Perl.exe is in  version 315
5. The web server machine is an NT4

Question: do you know if I have missed anything that cause this error?  
Who is Participating?
mouattsConnect With a Mentor Commented:
501 can mean a number of things but if you are using the perl from ActiveState (which I assume you are) the download the DLL from their site that is called something like perl for ISAPI. If the 315 version is still available then this is fine other wise you will need to download the matching perl intepretor as well which i think is version 316.

This may not get rid of your error but it is a starting point.

cklhAuthor Commented:
my email address is: cklh@zdnetmail.com
Dis you have perl installed?
What version?
501 mean that this action not implemented (unsupported)
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cklhAuthor Commented:
Edited text of question
cklhAuthor Commented:
Edited text of question
cklhAuthor Commented:
Adjusted points to 200
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