Start by loading up the RTC, launching either BizHawk or Dolphin, and clicking the wizard icon to the left that says, "Easy Start." Next, click, "Switch to Simple Mode." At the top you'll see a prompt asking if you're corrupting 2D or 3D games. For this, we'll assume we're corrupting a 2D game today, so we'll select, "Classic Platforms." If you are corrupting a console such as the GCN or PS2, you'll want to try, "Modern Platforms."