C.S.
We have the same situation! We took out our area rugs, and the floors were a mess. We used "Holloway House" concentrated floor cleaner, and then "Holloway House Floor Shine" and they look fantastic.
It was just about an all day job. On hands and knees we scrubbed the floors with the floor cleaner. We had to go over them again and again. (I keep a pretty clean house, so I was totally grossed out)
We mopped on the Floor Shine and the floors like amazing!!
We bought the stuff at Ocean State Job Lot, for less than $6 a bottle. But I think you can find it most anywhere...Online perhaps?
Good Luck!