// C#
using System.Diagnostics;

class MyProgram {
    static void Main(string[] args) {
        string MyExe = "C:\path\to\perl.exe";
        string MyScript = args[0];
        string MyDir = "Test Dir";
        
	Process.Start(MyExe, MyScript, MyDir);
    }
}

# Perl
my ($MyExe, $MyDir) = ("C:/path/to/perl.exe", "Test Dir");
my $MyScript = shift;
system($MyExe, $MyScript, $MyDir);