How to file tax in us for indian with l1 (came here in Aug 2010).
Resident or non-resident and which forms to fill up?

If you are not married, file nonresident tax return. If you are here for over one year, claim moving expenses using From 3903. If you are here for less than a year, claim transportation, lodging and meals as itemized deduction using Form 2106 or 2106-EZ. Your U.S. Tax Return: The U.S. Visas

Can I file as a resident or is it mandatory to file as a non resident?