question directed to Bert kindly: what are the advantages of a domain, and how hard is it to set one up? I thought I knew a fair amount about computers, but networks seem to be my Waterloo. I started P2P and found I needed to get a server as windows XP would not let me connect all the computers in my office. My server has a 3-disc RAID array and big battery backup. I am solo, but have about 17 computers as I can only have a single chart open at a time on one computer. I have static IP addresses and just upgraded my wireless network to N. Any great ideas to help "bullet-proof" or speed-up the system?