30 October 2011
1st of all you need to have a software for preparing TDS return, either downloaded from NSDL site or purchased from a vendor.
Then you need to enter the details of all challans relating to the quarter for which return is being prepared. After that you need to enter deductee details against every challan. There are many more points which you will know only during the process of preparing returns. After all the entries you need to download the csi file and balidate the return. If successful submit the generated fvu file in a CD along with form 27A.
For details on TDS also read article from below link----