Using paper based public/private keys in bitcoin-qt If I only have a public key string and a private key string written on a sheet of paper.  How do I use those in bitcoin-qt?

If this can be added to bitcoin-qt, will it eventually show me how much funds that private/public key has when the block chain is synchronized on my computer?

I understand this action will cause the cold private key to become a hot private key.
I  haven't tested this myself yet but I understand that you can use the info from a paper wallet and generate a transaction using http://brainwallet.org, that said brainwallet.org make some rather nice paper wallets much more info included the the blockchain.info paper wallet.  Let me know if you send a Transaction using this would be interested to know if it works and how simple it was....