Hi All. I have 2 Vista Ultimate quad core computers & have an HP Mediasmart EX485 (Windows Home Server) on it's way. If I were to buy 3 x ESET Smart Security (Home Edition) Licences for three computers, laptops or workstations Can I load 1 of the Smart Security licenses on the WHS computer WITHOUT the firewall. Ie as ESET NOD32 Antivirus 4? Will that cause problems?