- Install the latest version of WinAVR (is this really necessary if I just want to use this to program via the Arduino IDE?)
- Download and unzip the installation files from http://www.ladyada.net/make/usbtinyisp/ ... .2.1.0.zip
- Run the installer_x64.exe in the unzipped folder (there is also an installer_x86.exe which I presume is the 32-bit installer).
- Plug in the device to USB and enjoy
Is that the right sequence of steps, or am I missing something subtle?