Hello

This is just a comment about this clock. You are thinking way too much while you should be reading the documents (perldoc perldata now). You will see that this block:

#Match $requestedApp to an executable path.
foreach $appkey (keys(%apps)){
    if ($appkey eq $requestedApp){
        $requestedAppPath = $apps{$appkey};
        break;
    }
}
[download]

should be replaced by:$requestedAppPath = $apps{$requestedApp}; You rarely need to iterate over hash keys.

Hope this helps,,,

Aziz,,, Update: Your code has a missing assignment "=" also:

%apps = qw(
    USA C:\Apps\USA\USA.EXE
);