How to file it returns with hra exemption claims

Hi,

Due to personal reasons, I have relocated to Bangalore. I am staying at shared apartment rigt now and  I planned to shift my family in family apartment by this december. As spoke to Finance team reg. HRA exemption claim to til Dec'12, they replied that I am eligble on actaul spending in HRA tax exemption and I can not eligble for full HRA allowance which mentioned in my salary structure and also they will close IT declaration docz submission by Dec'12. I do not wants to submit a fake rental agreement now and the Finace team do not accept it either. So they told me to make the HRA tax exempion is zero as of now and file a IT returns at the yearend for excess Tax deduction with actual Rental agreement.

My queries are,

1. Is that best method to my case?

2. How to file IT Returns with HRA exemption for Excess Tax deduction?

3. What are the documents I have to submit with IT returns file?

4. IT department will come and check at the address which mentioned on rental Agreement. If I submit fake rental agreement (in wrost case)?

5. What is the procedure IT department will follow?

6. To whom to contact to file IT returns with HRA exemption for my case?

Thanks in advance.