I have an old turbotax file that i need to open

Where did you get it?  Did you use the Desktop program for 2000?  You need that installed to open a .tax file.

If you have a .tax or .tax20xx file you need that year's Desktop program installed to open it.

Turbo Tax doesn't have programs older than 3 years.  You might be able to find one on Ebay or Amazon or somewhere but you wouldn't be able to update it or download the state program.

You could try the TaxPrinter service (not connected with Turbo Tax) to convert a .tax file to pdf at

http://www.taxprinter.com

OR get a copy from the IRS -

http://www.irs.gov/Individuals/Get-Transcript

Try TaxPrinter.com - https://www.taxprinter.com/

if you buy a copy of the 2000 app, it likely will be a beta version that can not be updated so opening a .tax2000 file with it will likely change it from what was filed,

It is unlikely that the IRS will have a transcript that old.