Settlement level for nifty October 2011

Nifty while rising from 4730 zone by making double bottom reached to 5140 and loosing it steam. Nifty future open interest came down. FII data bought in cash, bought in index futures, sold in stocks futures. But the bullishness is intact. Nifty option writings shows that 5200-5400 is target levels for October or November first week. Support at the most will be at 4800 but not confident the market drifts to that level. Bullish above 4980. This settlement may be from 5170 to ( My expectation)