I have a home business in the state of georgia, I have been selling online ONLY and have had only 2 sales that?

were purchased from people in the state, of which I collected state and county taxes and I am a monthly filer online and did my monthly return and sent the payment immediately on both. I also only did 863.00 of sales in 2010, $30 of which was to GA - my question is , do I have to file another state return ( this is the only earning I had thru the year , and my hubby is a nonresident military) or are the monthly returns sufficient? I have been on hold for an hour with them right now and have sent emails to the office already asking - just thought someone out there mighyt know. Thanks.