Good catch, Toasty! Here are the instructions for that. You'll only use part of it though, as you're replacing the pads, too. Pay particular attention to the "Important" section that talks of removing rust from the mating surface on the hub.
If the rotor does not come off easily, a bit of penetrating oil around the center, and a few good whacks with a hammer, to set up a vibration, will free it up.
Brake Rotor Replacement - Front
A first time subscription for one year, I think, runs about $25. Renewals, and added vehicles after you have the first is $14.95 for a year. They have 3 year deals, too. If you sell the vehicle and purchase another, they will transfer the subscription to the new vehicle. Limit of once per year.