Unzip driftmeter. zip into a new folder where you want to keep the gauge documentation. In that folder, find and move drift5. cab to the FS2004 instruments gauges folder. If you want an icon on your desktop to open the Driftmeter Manual, create a shortcut to Driftmeter Manual. htm and drag it to your desktop. Installation and un-installation instructions, along with the users operating manual, and some how to use suggestions are in the documentation. They are accessable from the Driftmeter Manual. htm file. Although it is not a very complicated gauge, its use does require some thought and instructions are provided. This gauge is usable exclusively in FS2004.