By my very accurate calculations the answer is erm, err, a long time! (Without setup and failure it's about 75 hrs.)
I suppose it's all part of the job for you though really, must hurt though having to put Windows on a Mac, kind of half defeats the point really.
She probably stole it, lolMy boss bought a BARELY USED T60 from a pawn shop. It was only $100. We're selling it for $800. Get this: The girl that sold it to the pawn shop sold it for $50. What an idiot but what a great deal for us.