well i actually work out my glutes. my gym has a glute machine that i like and i use it pretty much everyd leg day. i also do the seated leg machines that workout inner and outer thigh... .. my philosophy is to leave no muscle untrained
Yea, I'm just saying the glute machine isn't going to hit the glutes as hard as a back squat will. Plus, with just starting squats, since it's essentially a new exercise to you, you're going to get DOMS in the glutes pretty bad from it. Should get better over time.
As far as the original comment about squats goes, can you build big legs without the squat? Sure. But I feel that the squat offers a lot more than just building the legs. It hits the spinal erectors hard, glutes and hams also get worked very well. It's a move that you can't really beat for the best bang for you buck. Yea I can do a bunch of different exercises to hit those other muscles, but with the squat there's not really any need for me to.
Years ago I hated the squat. I was self taught and had horrible form. After throwing it in the "useless" exercise category I had a guy who had been powerlifting for years show me how to squat properly. After 3 months of squatting correctly it's something I'll always have in my rotation for legs. I love it now and am very comfortable with it, one of my favorite moves.