My main panel is the only electrical component grounded. Since I only have two-wire no-ground wiring throughout my house, I was wondering if I could install GFCI receptacles to replace my two-prong receptacles. Some people have been telling me that I need a ground wire to make the GFCI work. Is this correct? All the appliances that I buy are the three-prong type, I do need to replace my receptacles but I want to avoid the expense of re-wiring just to add a ground wire. Is it easier to just replace my two-prong receptacles with three-prong ones and ignore the ground if I replace the breakers with GFCI breakers in the main panel(my main panel is grounded)? Any suggestions would be appreciated. Thank you.