This is what i'd like to do.Depending on the operating system you are using, you may be able to remote into it from another computer on your network. I know it works with XP pro, and Vista Ultimate. My current computer is only a few week old, running Vista Ultimate. My old computer is running XP pro. I don't really like using KVM switches to switch back and forth between computers. So, I just plugged my old computer into the network and AC power and remote into it from my new computer. No extra software needed.
Remote desktop is based on terminal services, so unless you need extreme security I think it is just fine. There are a few things you and do to make it more secure. You can limit who's able to log-on. I think it allows anyone with an account on the computer to log-on to remote desktop by default. Also, you can apparently enable encryption. Here is some reading material:I'm just thinking how good it is security-wise?