Want to change Ckeditor Model name

Hi

I am using rails 3.2.8

I am using Ckeditor and these generating model ‘pictures’ and
‘attachment_files’ for storing images.( app/model/ckeditor/picture.rb)
I already have Pictures (app/model/picture.rb) model and have 100 more
datas.
Problem is While i try to access my picture model that make error like
below

app/models/ckeditor/picture.rb to define Picture
from
/home/saravanan/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:490:in
load_missing_constant' from /home/saravanan/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:181:inblock in const_missing’
from
/home/saravanan/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:179:in
each' from /home/saravanan/.rvm/gems/ruby-1.9.3-p194/gems/activesupport-3.1.1/lib/active_support/dependencies.rb:179:inconst_missing’

How can change Ckeditor picture model name…
ckeditor gem just generate " mount Ckeditor::Engine => ‘/ckeditor’ " in
my
routes

I can solve it by changing my picture model name but it painful. and i
am
used that model in many controller, models and views.

Please say, is there any way to change ckeditor model name…