Transfer bitcoins from an address to another
It sounds like you used a Bitcoin wallet to move money before. You need to know more about the account than just the address, in order to move the money out of that address. With the address, you can look at how much money the address has, and add more money to it, but you can't take money out.

If you had the private key, which should be kept by the Bitcoin wallet, or written down somewhere, you could spend this. A private key looks like 5SD8ak... .

Unfortunately, I don't know which program you used, so I can't tell you anything more specific. I can point you to this list of Bitcoin wallets. Maybe you used one from there.