First off dont grease the pads, if you got new rotors get a set of pads they come with them if they are required. they are squeaking because the pads have wear sensors and when your padfs get low these sensors make contact with the surface and they will squeak letting you know it is time for pads and with new pads and rotors you just installthem noneed to have the rotors turned, if replacing the rotors requires taking the hub apart be sure to grease the bearings if not the job will be much easier.

Well the pads arenot low at all and have a lot of pad to go. I had not bought the pads, they were on the car when i got them and i figured the rotors would be fine, so the padssqueaked on the old rotors and on the new ones as well.

I would replace the pads with advance auto gold pads , turn the brake rotors
if needed , i had this experience , and the better pads helped.

If the pads shift just a hair they will squeak. Buy a can of "Brake Quiet" you spray it on the back side of the pads, let dry, reassemble with no shims. Give it a try, it has always worked for me.

Get new high quality brakes, this will solve the issue. The old pads may be low-grade even thogh they are not worn out.