I guess I shouldn't have taken my signature off about the details of a system. P2P is OK for a small office (six or less computers I would estimate). Server if larger of if you want all the extra features it gives you.
I think the single best piece of advice I have ever given is to never use the computer that the database is on. AC, btw, is usually on every computer.
And no IT guy. Get an IT specialist who works in a store that sells computers and networking and doesn't have Best Buy on the front.
