Don't know if this sheds any light on the matter, but I ran the following test script:

#!c:/Perl/bin/perl.exe
##
## printenv -- demo CGI program which just prints its environment
##

print "Content-type: text/plain; charset=iso-8859-1\n\n";z
foreach $var (sort(keys(%ENV))) {
$val = $ENV{$var};
$val =~ s|\n|\\n|g;
$val =~ s|"|\\"|g;
print "${var}=\"${val}\"\n";
}


which produced:
AUTH_TYPE="Basic"
COMSPEC="C:\WINDOWS\system32\cmd.exe"
DOCUMENT_ROOT="C:/Program Files/Apache Software Foundation/Apache2.2/htdocs"
GATEWAY_INTERFACE="CGI/1.1"
HTTP_ACCEPT="*/*"
HTTP_ACCEPT_ENCODING="gzip, deflate"
HTTP_ACCEPT_LANGUAGE="en-us"
HTTP_CONNECTION="Keep-Alive"
HTTP_HOST="localhost"
HTTP_UA_CPU="x86"
HTTP_USER_AGENT="Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; GTB5; .NET CLR 1.1.4322)"
PATH="C:\Perl\site\bin;C:\Perl\bin;C:\Program Files\MySQL\MySQL Server 5.1\bin;C:\oracle\product\10.2.0\db_1\bin;C:\oracle\product\OWB10.1\bin;C:\oracle\product\OWB10.1\jre\1.4.2\bin\client;C:\oracle\product\OWB10.1\jre\1.4.2\bin;C:\oracle\product\10.2.0\HTML_HTTP\bin;C:\oracle\product\10.2.0\HTML_HTTP\jlib;C:\Perl\bin\;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\QuickTime\QTSystem\"
PATHEXT=".COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH"
QUERY_STRING=""
REMOTE_ADDR="127.0.0.1"
REMOTE_PORT="1083"
REMOTE_USER="gfr"
REQUEST_METHOD="GET"
REQUEST_URI="/modperl/printenv.pl"
SCRIPT_FILENAME="C:/Documents/Documents_20090101_to_20091231/Computing/GalleryForRent_Maintenance/modperl/printenv.pl"
SCRIPT_NAME="/modperl/printenv.pl"
SERVER_ADDR="127.0.0.1"
SERVER_ADMIN="andynic@xs4all.nl"
SERVER_NAME="localhost"
SERVER_PORT="80"
SERVER_PROTOCOL="HTTP/1.1"
SERVER_SIGNATURE=""
SERVER_SOFTWARE="Apache/2.2.11 (Win32) mod_perl/2.0.4-dev Perl/v5.10.0"
SYSTEMROOT="C:\WINDOWS"
WINDIR="C:\WINDOWS"

Does this indicate that the mod_perl.so is installed? If so, then why the errors in error.log
Thanks,
Andynic