After reading all , it's more confused and making more clear indeed :) . I used one of the software and it directed me to 1040A where I used as "resident alien". Now I realized that I am not eligible for that and it is wrong filing. All is gone, past is past.

Now I need solution.

How do I know that my filing is on right track or on pending due to above mentioned error? Does IRS assess our tax or not? Do they calculate the tax no matter what we mentioned in the filing?

Thanks.