The only way to open a 2006 TurboTax .tax file is with the CD or download TurboTax software for 2006. If all you need is a PDF or a printed copy, you could try TaxPrinter. You send them your .tax file and they send you back a PDF of the tax return, which you can then print with Acrobat Reader. TaxPrinter has no connection with TurboTax. I have never used TaxPrinter, so I cannot make a recommendation. I'm just making you aware of it.
