0 - 2 of 2 tags for ERD

Is anyone using, or have any suggestions for, a free/cheap data modelling or database design tool?  We are about to start planning and building a new data warehouse.  It is fairly small, and we can't justify paying for Erwin licences, so I wondered if anyone was using anything else.

I'm just looking at using Visio 2010 to create a database design.  The tools seems a great way of entering information and drawing the ERD.  However there doesn't seem to be any way of getting the data out again after you have put it all in.