I have an old Dell Dimension desktop P3. Can I connect a Cat5e cable to the desktop and my laptop and use my desktop as an external Hard drive? I was hoping to use it similar to a file server a place where I can install print programs and other applications and connect to that PC and access the apps as I need them. Or is this not possible? I also wanted to store vital back up info on it. If this is not possible how can I accomplish this?