This is what you have to do: you and a friend need to wait for your parents to go out of town to Cincinnati for the weekend. Watch the film Frankenstein for inspiration, then decide to create a "virtual" and "perfect" woman on your home computer preferably a Memotech MTX512. Then design your "perfect" woman by filling your computer with various forms of data and images. When your computer reaches capacity hack into a government mainframe for more processing power and data storage capacity. As a finishing touch connect a Barbie doll to the computer through a series of wires and electrodes. At the exact moment you hit "enter" to execute the program, make sure a lightning bolt strikes the house leading to a series of supernatural occurrences. You will know you've succeeded when there is a violent explosion and when the smoke clears a beautiful woman with a great voice should emerge from your bathroom.
Just kidding man. It's a great question though and I'm intrested to hear other peoples ideas.