Ok here is what I did after reading all of these informative replys.I bought a APC 1000va/600watts with VAR tecnology. I also bout a surge protector to plug into the wall and then plug the APC into the surge protector. This is what the young man said he did and he also lives in an older home and has not had any problems. So.....hope I did the right thing. Thanks again for all of your information.