I have four office computers on a network running Vista Business and would like your advice on what to install in terms of security. At the moment we only have Windows Firewall and A-Squared. Unfortunately you could consider some of the users to be somewhat slack when it comes to security, they'll open any attachment or file off the internet without any consideration dispite being told not to. The users are on limited accounts but I feel more could be done to secure the PCs. The system does need to be idiot-proof for the user and in the past the users just click "accept" on any firewall message or AV message. I was thinking just install Kaspersky Internet Security 2010 and have done? I was also considering Anti-Executable to go with Kaspersky but its too expensive at £23 per PC. There are better solutions for far less. Whats your take?