Query-Attempts-Reg

hi all

this is krishna .......... i got eligibility for MAY 2011 Final attempt and also i've applied for the same........

Now I would like to skip my attempt and write in NOV 2011 exams.... 

Whats my doubt is ... 

1) Is there any facility of cancelling my application for exams??

2) If not and if I choose even not to attend the exams and skip , will it be considered as an Attempt given in the placements and in my job prospects????