I know you're asking Killer, but my opinion is-

If there's proof, there's proof. I would just assume it was within the (however many) thousands of years before Adam and Eve which isn't mentioned in the bible.

There's scientific proof that the earth has been here for around 6,000 years...
2000 years- Before Christ
2000 years- From Christ til now
Where's the other 2000 years? It was either A) not talked about in the bible, or B) it took God "7 days" to create the earth- however, a day is as a thousand years in the eyes of God...

Just food for thought...