Fuel consumption display

Does anyone know of a fuel consumption display that would work on a 2000 windstar?

Has anyone built / converted / bought one?
Is there an OBDII adapter + software that would fit to a laptop?

Any ideas, any thoughts, anyone?

I have a ScanGauge, available here......
http://www.scangauge.com/

It is a OBDII code reader and has a setting where you can display a variety of different "gauge" readings, including MPG and Gallons per hour....etc.
Very easy to use.

Thanks for replying Wiswind.
Do you find it to be beneficial? I was told that you can see instant fuel consumption changes as ones driving technique changes. I also want to see what else is happening with my car.

thanks.

I have found it to be very helpful.