Is Sunny Acres Process Cheese Topping a vegetarian substitute?

I'm considering going Vegan for a month out of curiousity. I'm doing as much research as I can. I'm trying to eat more fruit (because I've never been big on fruit. Veggies I'm fine with, but fruits a biggie.) I'm not attempting this without research. However, I've seen Sunny Acres and tasted it, and I'm not sure if it's real cheese or a substitute. I understand it contains milk products. I can live with that :) Is it an alternative or what are some good alternatives? I know I need to keep my protien up, but I want something other than milk to do so. Any help?