1. Set environment valiable.

$ export SQLD4R_CONF=~/.sqld4r

- Default is $HOME/.sqld4r

2. Create config file.

$ sqld4r --init

3. Modify default values.

$ vi ~/.sqld4r

4. Test for setting

$ sqld4r --check

5. Generate migration files and model files from SQLDesigner xml file.

$ cd your-rails-root
$ sqld4r /path/to/SQLDesigner.xml

For more information on sqld4r, see http://sqld4r.rubyforge.org