Mistake in online exam form

ISHA. (Chartered Accountant) (105 Points)

08 February 2011  

I have filed my exam form online today but i made a BLUNDER MISTAKE. Instead of quoting PCC second group roll no. i have written CPT ROLL NO. 

M very tensed.. Cant tell mom dad too.. what should i do kindly tell how to rectify the same or i need to fill my exam form again by paying the fees also.. 

please advice it would be of  great help to me..

thanks