I am purchasing a new laptop system with Vista Home Premium. Can anyone recommend free anti-spyware, anti-virus and firewall that is compatible with Vista Home Premium or am I better purchasing software to cover all this? On my old laptop I used AVG anti-spyware, AVG anti-virus and Comodo firewall. Not sure about the Comodo firewall as it never seemed to come up with any intrusion or block attempts, seems a bit strange! Thanks for any help.