As for minimum config: I have an emergency box that can be thrown into use as a router and/or file server that's a Pentium/200 MHz with 192 megs of RAM. It's quite acceptable in use and has weathered some hard duty. My home LAN server is a PII/233 with 256 megs and quite comfortably handles Gallery, NetJuke, InfoCentral, does gateway/router duties with printer services and hosts a few webpages for friends & family. Server Manager loads in 5-6 seconds.