I have a Toshiba Satellite (Dual-Core 1.6 GHz) with Ubuntu 10.04 extended on an external monitor (19") and an old Compaq desktop (Dual-Core 2.0 GHz) with Window

I have a Toshiba Satellite (Dual-Core 1.6 GHz) with Ubuntu 10.04 extended on an external monitor (19") and an old Compaq desktop (Dual-Core 2.0 GHz) with Windows XP on a 26" monitor.