[Xitami] Cgi problems

[Kevin]

Using 2.4D9 Xitami server,activestate perl,windows ME,cgi enabled.
I am able to execute an image-based counter cgi successfully if I link
directly to the cgi.  Ie. http://host.com/cgi-bin/mycgi.pl
But when using SSI call to the cgi inside a .html page the cgi is not
exectuted and no cgierr is generated.
If I change the extension of the same page to .shtml then the page is
not shown and I get a 500 internal server error.  Once again not cgierr
is generated.

Your help is appreciated
-kevin