Column Inspection

I have recently installed Rails 2.0.2. The problem I am having is
that when I create a fresh rails app and do a script/generate scaffold
thingy I then edit the migration to add columns to the table and do
the rake db:migrate. Once that is complete I fire up the application
with either mongrel or webrick. I point my browser at the base page
http://localhost:3000/thingys/ I get the list page but the columns
that are defined are not available if click new I am not getting
anything. If click create it will add records to the sqlite database
with nothing in them. Unless I add some validates to the model then
it fails. I have tried this on windows, os x, linux and am seeing it
in all places.

If this has been answered before I apologize it must be me anyone know
what I am doing wrong?

Thanks R.J.