Well let me know if you need more help on research. Keep this in mind, the cost of a computer specialist to come out and resolve a nasty network infection will cost much more than the software. I charge on the low side @ $65 per hour, and I would probably have to spend the better part of 4 hours onsite to resolve a distributed computer virus like the ones a small Business Network would get. Also, what is the type of data that you are protecting? That is also a major consideration. If you have a clients personal data on your network their is a legal responsibility. If you go cheap, and get sued, bye bye non profit.