I have recently bought an older 60's home which has no grounded receptacles. A friend told me I could replace the old 2-wire outlets with grounded ones and just jump a piece of copper wire from the ground screw to the neutral on the new outlet and it would be grounded. I think I'm repeating his instructions right. Is this true, or should I replace the old outlet with a GFCI until I can do some rewiring? Is there any other way to do a pigtail and ground a non grounded outlet? 