I want to either build or buy a server to maintain a central file location for our files. I really know next to nothing about servers and networking, but have read a little just to get familiar with some of the terms. On the low end of the spectrum, looks like a guy can get one of these simple and inexpensive NAS devices. On the other end is something like a Dell PowerEdge server. Based on some things I've found, looks like the RAID 5 is a pretty good way to set it up (with 3 or 4 HDs). All I really want it for currently is for central file storage, though I know a true server is capable of more, though I really don't know what else I'd use it for. We'd probably only have about 3 or 4 systems on the network (looks like the magic number is 5 or less for entry level). I don't know whether to use a MS Server based solution, or Linux or ??? So, looking for some advice and recommendations. Not necessarily looking for low-buck, but is easy to use, secure and relatively quick. Would like to spend around $1500 or less on whatever it is.