Rails: find_by_contents with conditions; syntax help please

Looking to limit a find based on conditions in a Rails 2.0.2.

Find statement:

@employees = Employee.find_by_contents(params[:keywords].to_s, :include => [ :categories, :revisions, :approvals, :archives, :related_documents ])

Need to add a condition to limit find

:conditions=>["archived = '0'"]

Though this doesn't work

@employees = Employee.find_by_contents(params[:keywords].to_s, :include => [ :categories, :revisions, :approvals, :archives, :related_documents ], :conditions=>["archived = '0'"])

Anyone know what the syntax should be?

Was having quite a time with adding a condition to ferret find_by, so I added a post command to filter if it's archived. If you think of a better way still, let me know. Thanks.

@employees = Employee.find_by_contents(params[:keywords].to_s, 
              :include => [ :categories, :revisions, :approvals, 
                            :archives, :related_documents ])
@employees = @employees.find_all {|p| !p.archived}