for daemons look at Win32::Daemon or check out the AS docs

As for the tray icon, perhaps Win32::GUI and this (taken from the mailing list}

my $icon = new Win32::GUI::Icon("tool.ico");
        $trayicon = $Window->AddNotifyIcon(-name => "TrayIcon", -id=>1
+,-icon => $icon, 
        -tip => "$title");
[download]

-p