I've successfully tested the SMS feature through comcast and a verizon mobile phone, so please use the Test button and let me know if it goes through for you all.
Description:
This app automatically checks your local BestBuy for the XBOX 360 Premiums at a time interval you specify and automatically alerts you via SMS (Text Message) on your Mobile Phone.
Besure to visit the site for more info: http://untitlednet.com
(dns is still updating so email me if you can't get through)

Version 0.7:
<changelog>
1.10.06:
+Added SMS (Text Messaging) Feature implemented and WORKING!
+Added Test SMS, allows one to send a test text message to his/her mobile phone
+Added Automatically disables auto check upon first in-stock
(as a precaution for those who may be charged for incoming text messages)
+Added Enable / Disable Auto Check Button
+Added Enable / Disable SMS Sending
+Added Easy selection of Mobile Provider list
+Added Fixed repeated notifications (auto disable)
+Added Help Messages
*Changed Default Check Interval to 30 minutes (they can't possible sell out in 5 mins... right?)
*Changed Header Logo
*Fixed Minor Annoyances
*I'll try to include an installer in the next release.
</changelog>
