Open the downloaded folder and find the setup.exe or bootcamp.msi file inside the "Drivers" or "BootCamp" folder.

If you still have your original Mac OS X 10.6 (Snow Leopard) DVD:

Which (e.g., Windows 7, Windows 10) are you trying to run?

Apple distributes Bootcamp drivers at no charge as part of macOS. You should never pay for a download link.

is a utility from Apple that allows you to install Microsoft Windows on your Intel-based Mac. Bootcamp 3.0 was a major release bundled with Mac OS X 10.6 Snow Leopard, which introduced significant improvements for Windows 7 support.

Because Apple does not host a file named "Bootcamp 3.0 64-bit.exe" on its official support pages, locating it on a file-sharing or driver-mirroring site introduces several security risks:

Use the Boot Camp Assistant built into macOS.

Boot Camp 3.0 has known bugs concerning trackpad responsiveness and power management under Windows 7. Once 3.0 is successfully installed, it is highly recommended to immediately download and install followed by Boot Camp 3.2 64-bit from Apple's official support page to ensure system stability. To help find the exact steps for your setup, please share: What model and year is your Mac?

Bootcamp 3.0 does NOT officially support Windows 10 or Windows 11. For Windows 10, you need Bootcamp 6. However, many users have successfully forced Bootcamp 3.0 drivers to work on Windows 10—though you may lose some functionality (like the brightness control).