Toyota Corolla Starter Replace/Remove

When Turning The Key In The Ignition, The Starter Won't Turn Over. There Is No Sound At All. The Battery Is Good, The Radio And Lights...

What Is Involved In Replacing The Starter On This Car?

Have Repalced The Starter Several Times Believe It Was Getting Hot From The Exhoust, So I Make Sure The Timeing Was Spot On And My Last...

Any Suggestions On A Starter That Only Works Sometimes? I've Replaced The Starter - It Started Right Up. Then After A Month It Would Just...