Can i withdraw my amount next month?

To the Webmaster of KSR,

I have reached Rs.851/- in my KSR balance. I would to know if I can withdraw this amount of Rs.851/- in April 2012, that is next month.

I have read that for all spider sites the 1st payment is of Rs 750/- and Rs 1000/- from second payment onwards. If so, please let me know.I want to withdraw my amount next month.

And also when will the Invoice message be sent to me?