Your PC almost seems to be perform magic. It can do everything from playing music, keep track of your bank account, and let you know when your next appointment is due. But there is one thing it cannot do. It cannot be its own registry cleaner.
For the last 2 weeks, the IT department has had my laptop at work, and I have had to make use of the spare computer in the corner. We usually have temps work on this computer, so there is no telling how long it has been since anyone had done some real computer maintenance to it.