Rspec include paths

'm using rspec 2.10 with Rails 3.2.1 and have problems with classes not
being found.

I have put a class called DbTasks under a dir app/util. Under spec, i’ve
created file util/db_tasks_spec.rb which runs afer i included the line:

require File.join(File.dirname(FILE), ‘…/…/app/util/db_tasks’)

However, rspec now isn’t able to find my models. I don’t want to have to
include these manually. Is there a way to config rspecs paths so
everything gets found?