hey, the NX-01 had shields in tonights episode, courtesy of General Shran. Twenty years or so after the Xindi got Earth. Of course, it didnt do them a whole lotta good, the Xindi tracked them down and killed them, not that it would have mattered, the last remenants of Humanity were on Ceti Alpha V.
"You Lie! on Ceti Alpha V there was life! A fair chance!"
"THIS IS CETI ALPHA V!"
*sigh* "Ceti Alpha VI exploded, six months after we were left here, the shock shifted the orbit of this planet, and everything was laid to waste. Admiral Kirk, never bothered to check on our progress. It was only the fact of my Genetically Engineered intellect that allowed us to survive."
Khan and Chekov, ST: II TWOK, Ceti Alpha V.