Do you know if the spam is being sent to your sbcglobal.net account or your yahoo account? I've found that Yahoo seems pretty good at filtering my spam. If it's being sent to your sbcglobal account, you can switch your Yahoo account so your primary e-mail address is the Yahoo address (I think -- I've had my Yahoo accounts for so long, I can't remember the details). I forget where you can switch things, unfortunately. It may be a mail option.