I'm trying to get around buying Windows Server. We have a MS SQL database in our office that is shared by 10 client PCs. There are also other files on this "server" we all need. If we have any more client PCs I'll be forced to buy MS Server - BUT I was wondering if it's possible to use a NAS to house the database and files instead (?). These come with OS installed I presume, so is there a client max on these such as the 10 for XP?