I've googled around, and I haven't found a definitive compiler for latex (.tex files) on Windows. Any suggestions? Thanks!
MikTex is the one you want. I love the environment that come with it, TexWorks. Great stuff - and it's free. (Is it still shopping if you don't pay?)
According to your name "Chi Zeng", maybe you are Chinese, I suggest you use CTeX. It supports Chinese well.