Possible to check account balance with GSM shield?

Hi all,

I was wondering if it is possible to check my pay-as-you-go account balance from the GSM shield. With my carrier and a normal phone, you would send a text to *777# and get a response. However, I sent a blank sms message to this number and got no response. I have read that this may be a different type of message (flash, perhaps?) and am wondering if there is a way to send those from the shield.

Any help is appreciated!

Thanks, Scott