Instructions
Open a Web browser, navigate to a "Minecraft" bot download page and download a bot (see Resources). Save it to a temporary directory on your computer.
Click the "Start" button, type "minecraft" in the search text box and press "Enter." A window opens to the "Minecraft" directory.
Right-click the downloaded bot, select "Extract files..." and select the "Plugin" directory in the "Minecraft" directory.
Double-click the "Plugin" directory in the Windows Explorer panel you opened in Step 2. Verify that the "Bot" directory exists in your directory.
Run "Minecraft" to load the new bot.