Hi
I was in US on H1 visa with single status from Jan to May. I went back India got married and came back to US for 2 months (Sep- Nov) without my wife. So for year 2010 my wife was never in US.

Now, what tax filing status should I be using - Married Filing Separately or Single?

Also do I need to file using paper filing only?

Tell the dates you entered and left US?
Did you file 2009 tax return?

Yes I did file returns for 2009. I was in US all through 2009 and left on 7th May 2010. Re-entered back on 9/13 and left on 11/22

You are dual status.

So, how should I be Filing? Can I still apply for my wife ITIN and then File as Joint?