. . . i accidently was using an old BitCoin Adress. NOT for ALOT, but i did have about .10-.20 bitcoins sent over.
Is there anyway to "re-direct" those coins to the real owner? Me... or just chuck it up as a newbie mistake? . . .
If there was a way to send bitcoin somewhere, and then later change where it goes it wouldn't be a very good currency. Imagine if I could send you some bitcoin as payment for something, and then after receiving my purchase I "re-direct" those coins back into my own wallet.
That being said, if you can find an old backup of the wallet that has the "old Bitcoin Address" or if you wrote down the private key of that address somewhere, then you could access the bitcoins that are associated with that address and send them back. Otherwise, you can "chuck it up as a newbie mistake". Without access to the wallet.dat file or the private key of the address, the coins are as gone as if you tossed a $1 bill into a campfire.
Edit: There is a small possibility that some day in the distant future a weakness could be discovered in ECDSA with a Secp256k1 curve. If that should happen, (and you have ever sent any bitcoins from that address in the past) then it is possible that the bitcoins currently at that address could become recoverable with some effort. It is also possible that bitcoin could become popular enough for 0.20 BTC to become quite valuable someday. Perhaps it would be worth at least keeping track of the address and quantity of bitcoin in case recovery should become possible someday.