http://alerts.yahoo.com/config/edit...=http://mobile.yahoo.com/wireless/alert?.mcb= you'll need a Yahoo account (free)
MSN's My Mobile is what I use. You can set it to update you whenever a score happens, or just at certain intervals. And you can set it for just certain games so they're not annoying you for a game that you are actually at. How quick is Yahoo? Cause it usually takes MSN about 10-15 minutes to send the alert.