I was running an older computer 24/7 with a shoutcast server on it using windows ME....It ran pretty good and all but I wish I used fedora instead, I was too lazy to go and set everything up on linux which takes a while to install things and get everything working....I think that as long as your computer has space to "breathe" and isnt in a highly dusty area, you should be fine with it running, but make sure you check on it every once in a while to make sure it is still working and not locked up.... Right now my computer is off due to it have been locked up for a while and my server not working due to that. Since spring break is so close, I plan on installing fedora or a different linux OS to run smoothly and have more control over it..The only thing I have to figure out is how to change my IP to a static IP in linux and how to get everything running correctly.... My only suggestion is not to use the computer you need to work with because if you run a server and try to do other things on it, you might result in a lock down or super slowness...