I received a membership card from SENTINEL PROTECT, along with a pin number. In the package was a $1oo.00 Wal-Mart REBATE and activation code. I keyed in the activation code at walmartrebates.com, and they didn't take. The computer had a paragraph explaining that I needed to get the $100.00 walmartrebate from www.getretailrebates.com. I keyed in this address, and it would not take the activation code. From what I can understand, I am supposed to be able to purchase items and then print the rebates. However I can not get the system to take the activation code or my e-mail address. Help. JUDY