Additional: I will be keeping my Linux pc on 24/7 - I also have a UPS For it. I want to avoid using some kind of other server situation that is not under my complete control, like FolderShare. I am not criticizing their service, or any others like them, but would rather stay away from this kind of "information middleman". I could install Windows xp on this pc but I am hoping to be able to do this with Linux because it will be online 24/7 and I feel it will be a safer environment. It would be nice if I had drag and drop ability, could put an icon on the other 3 pc's so that it would appear to be a second hard drive.