SNiP provides virus scanning on all of your inbound SNiP hosted e-mail. This protects you from most e-mail spread viruses but it does not protect your computer in any other way. Viruses can still infect you from websites, borrowed floppy discs, or file sharing. To fully protect your computer you must install a virus scanner that runs at all times and protects you from infected files BEFORE they harm your computer.
SNiP recommends the following two antivirus packages. They are both free of charge and provide free updates. Both of them can be purchased if you need access to their phone based tech support departments.