Recently had a new cable router installed. When tech set up the new router, he used my existing wifi wifi name and password login info. My wife and I have mid 2010 MBP. I have no issues logging in to our Wifi, but my wife's MBP defaults to a stray Wifi. How do I set up her computer to default to the home Wifi. Is there a way to delete the stray Wifi that her computer is defaulting to. Many thanx for your time and help.