Peer to Peer Quasi server situation

would I need the server edition of avast 4 to protect 5 users sharing a peer to peer network, one of the pc’s is acting as the server.
all of the pc’s are running windows xp pro. Or should I just use professional editon on each pc?

thanks for help!

Professional Edition will do (both protection-wise and license-wise).

Just configure the on-access providers on the “server” so that they don’t show any virus alerts on the screen (i.e. turn on the “Silent mode”).

Thanks
Vlk