If you have not filed your 2005 taxes, the IRS onlne electronic filing is no longer available for individuals.
If you have a copy of Turbo TAX, you can file on line with them and get an on line receipt for filing the tax. You can then print the return, and copy it. Then mail it and get a mal receipt from the post office.
Tax Preparer
GPHR Cert; U.S. Treasury Tax Advocacy Panel appointee