something like this

sub system_detached {
    my $program;
    my @args ;
    my $cmdline;
    if( @_ > 1 ){
        ( $program ) = @_;
        $cmdline = Win32::ShellQuote::quote_system_string( @_ );
    } else {
        ( $cmdline ) = @_;
    }
    
    $!=$^E=0;
    my $ProcessObj;
## http://msdn.microsoft.com/en-us/library/windows/desktop/ms682425(v=
+vs.85).aspx# CreateProcess function (Windows)
## http://msdn.microsoft.com/en-us/library/windows/desktop/ms684863(v=
+vs.85).aspx# Process Creation Flags (Windows)
    
    use Win32::ShellQuote();
    use Win32::Process();
    
    Win32::Process::Create(
        $ProcessObj,
        $program,
        $cmdline,
        0, # don't inherit handles
        Win32::Process::DETACHED_PROCESS(),
        ".", #cwd
    ) or do {
        my $err = int($!).' '.$!." #### ".int($^E)." $^E  ";
        warn "??CreateProcess failed (\$ProcessObj $ProcessObj) $err "
+;
        return;
    };
    return $ProcessObj;
}
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