adress private key

[PoolMan]

If you have the private key of an adress, is like if you have the wallet?

[hashkey]

I don't think so, it's not the case that if you have a private key of an address, you have the wallet as a whole.

[PoolMan]

I don't think so, it's not the case that if you have a private key of an address, you have the wallet as a whole.

can you input the adress and the private key in different wallet?

[hashkey]

Yes, you can import your address using its private key to another Bitcoin wallet.

[PoolMan]

Yes, you can import your address using its private key to another Bitcoin wallet.

how do that?  Yes, you can import your address using its private key to another Bitcoin wallet
also,
Can You change the private key?

[hashkey]

Yes, you can import your address using its private key to another Bitcoin wallet.

how do that?  Yes, you can import your address using its private key to another Bitcoin wallet
also,
Can You change the private key?

What kind of change? I don't think you can change a private key of an address because it's fixed for that address.

If you have the private key of an address, open your Bitcoin-QT client, click Help, click Debug Window, go to Console tab, type walletpassphrase "Your wallet passphrase" 600 to unlock your wallet for 600 seconds or 10 minutes, then press enter, then type importprivkey your_private_key and hit enter, beware that this would take awhile as far as I know so be patient.

[raze]

The private key is the key to the funds at a public address. There are different ways to import it into a wallet (depends on the wallet you're using), but a quick Google will yield results.

[raze]

And no, they can't be changed. Though you can transfer the funds from one private key to another.

[s-4]

the private key is NOT a password, it's just another (MUCH more complex) form of your address.

if you have a private key, you can import in any wallet and the address will be calculated from the private key.

deducing the private key from the address, on the other hand, is VERY difficoult, and practically impossible