Old Computer died in the middle of doing this year's taxes, need to reinstall TurboTax desktop on new computer

I was in the middle of doing this year's taxes when my old computer bricked and is now unusable. I believe I have a usable backup of the in progress tax file, but I'll need to reinstall TurboTax desktop in order to finish and file this year's taxes. I do have the install CD and license key which was previously activated on the old computer. What do I need to do to reinstall and activate on the new computer?