what is the best combination of products to use for firewalls, anti-virus and spyware? Im askin cos my bro-in-law has recently used spyware doctor and it said he had 500+ infections, including his current spyware program spysheriff. my bro has etrust antivirus and firewall, and at the mo spysheriff, ive got symantec corp antivirus and firewall, and AVG free edition. Thanx in advance