I just purchased a house and had a regular inspection done without an electrical expert. Now that I have moved in, discovered that all the OUTLETS are 2 prong? and none are 3. Been advised by a friend that this is dangerous and need to get 3 prong installation so that the electrical circuits are grounded?? I'm don't know what this means. I also would like to know how much something like this would cost as I live in a small 2 bedroom house. Would like to know if this is neccessary. Also would like to know if this is against any electrical code violations of the seller who sold me this house.