yeh we are off-topic so one more question and i am off  

So All I do is Export Private Key. Then With that > Exported private Key << I do not need to keep updating the wallet.dat? In a scenario where my HDD is DEAD I grab that key from my USB with the Private key on it and use the Import private Key function and reset the blockchain + transactions.

And what happens is that the same BTC address which was there when I exported the key and all the transactions that have ever been made to that address will appear again on the new hard drive with my new wallet?

Is this correct?

Sorry if I am being very detailed, I just dont want to keep speaking about it since its offtopic