I would just bring up the admin Import/Export window, click on the export demographics, watch everything turn grey or the tan color and go get a cup of coffee for 15 minutes. Come back, and I bet you it is done.
By the way, you don't have to do it from the server or main computer. You can run it from any computer which is connected to the database. Just keep in mind that it will download it into the AC folder on THAT computer, not the server.
