WARNING. Before reading this page, users should note that messing with ECDSA private keys is very dangerous and can result in losing bitcoins, even long after the import. It is recommended that outside of self-generated vanity addresses, users should never import (or export) private keys.
Caution: Be careful while transferring private keys. Wrongful handling can cause the loss of your Litecoins. Always make a backup of your wallet.dat before importing and exporting private keys. Click on Help, open the Debug Window and switch to the Console tab.