Funnygurl, you're correct about re-applying and being persistent.
Betty, it works similiar to your basic exemption, in that you won't pay tax on $7225 of your income, if that makes sense ? Could be worth $2000.00 or so, depending on your earnings etc.
IIRC it goes on line 126 or 136 of your tax form.
You should be able to download the forms also.