Moving, and I need new e-mail address?

Also, the address refers to a business I no longer own. What is the best way to change my e-mail address without closing the whole account?

if you are talking about yahoo mail, select options and go to the area to change your personal preferences....you can change your name etc...
what you cannot change is the actual name (like sammy@yahoo.com)....but you can change everything else

good luck

It depends on what type of email program you are using. All are different. You can go into the account manager of the email program and change your name, address and anything else you need. Assuming you are the one that created the account.