This is for tax year 2010.
I lived / worked in IL from July 09-Sep 09. I moved to NJ and worked there from Oct 09 till Mar 10. My employer kept running(jan 10 till mar 10) my payroll for IL even though i moved out. I have not filed my Fed, state(IL, NJ) yet. I want my employer to help me with this, but no good help yet. So last year i paid the tax dues to Fed and IL, NJ. I over paid just to avoid any penalties. Since i have not filed my 2010 taxes yet,

1) How can i reclaim the tax paid while i did not live / work in IL.
2) What forms should be used. Do i need to give proper explanation and provide proof to IL tax dept?
3) Can i do file my fed, state taxes myself using any "prior year tax return" from Taxcut/taxact or anything like that.
4) One of my friend said beyond 0ct 15th, only tax consultant, should be able to file this, i cannot do myself? I am ok to take their help. But i am not sure how much they cost.

Pleas advise.