Income Tax Returns.

All you who want to know about tax can visit the following URL for FAQ regarding it. http://incometaxindia.gov.in/questionbank.htm

Or you can visit following site of Income tax India for all the information you need and for downloading of required forms.
http://incometaxindia.gov.in/

You can now file your returns online on the following site
http://www.incometaxindiaefiling.gov.in/portal/index.jsp

Here all you have to do is register your self with your PAN number. PAN number is compulsory as this is your unique user id. After you have created your login download the required form and fill up the form and generate a XML file from it and upload that XML on the site and your return filing is over.

The forms that are available are in PDF forms which you can fill it in any Adobe Acrobat Reader which is a free download.