Hi. If you used the CD/Desktop version of TurboTax, then the only copy is on the computer where you prepared the return. TurboTax does not have a copy online.
You can get a free transcript of your return from the IRS:
http://www.irs.gov/Individuals/Get-Transcript
You can get a complete copy from the IRS, but it costs money, see this link for how to get it:
http://www.irs.gov/taxtopics/tc156.html
