If you think the NIFTY is not going to be above 3150 on the 26th of Feb 2009, but could get close then:
a) Buy 1000 contracts of 3050 strike calls @ 33.0
b) Sell 2000 contracts of 3100 strike calls @ 19.25
(You can do any number in the ratio of buy 1x and sell 2x. I will use 1000 by 2000...