File extension: .kys
OK, this worked for me.
Open Windows Explorer
On the left side, double-click the C drive to open it, double click the Users folder, and the double click on your user name folder.
Click in the Location bar and add \AppData\. You will then be able to see the hidden folder and continue navigating to the Adobe Premiere Pro data you need.
Double click each successive folder: Roaming, Adobe, Premiere Pro, 5.5
Copy the .kys file anywhere you like.
Paste it into a like location on your other computer. You should be good to go!
sorry, I forgot one detail. I am on a mac.
found them. thnks for the responses. it made me look deeper.