Can't get form to render.

Hi All,

I cant for the life of me work out why the form isn't rendering...
I have attached an image of the file without the rendered form.

I've attached all the code from the controller, route, and views html
file thingy, and the master html file thingy as well...
You can probably tell I am a complete beginner. I have rails 3 I think
and have managed to get other pages from this application working such
as index showing all rows on the database and also a page with
individual rows from the database

class AdsController < ApplicationController

  def new
    @ad = Ad.new
  end

  def show
    @ad = Ad.find(params[:id])
  end

  def index
      @ads = Ad.find(:all)
    end
end

Mebay::Application.routes.draw do

match '/ads/new' => 'ads#new'
match '/ads/create' => 'ads#create'
match '/ads/:id' => 'ads#show'
match '/ads' => 'ads#index'

resources :ads

end

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <title>Ads: <%= controller.action_name %></title>
    <%= stylesheet_link_tag 'default.css' %>
</head>
<body>
    <div id="wrapper">
    <div id="header">
      <div>

        <h1>MeBay</h1>
        <ul id="nav">
          <li><a href="/ads/">All Ads</a></li>
        </ul>
      </div>
    </div>

    <div id="content">
      <%= yield %>
    </div>
    <div id="clearfooter"></div>
    </div>
  <div id="footer"></div>
</body>
</html>

<h1>New ad</h1>
<% form_for(@ad,:url=>{:action=>'create'}) do |f| %>
  <p><b>Name</b><br /><%= f.text_field :name %></p>
  <p><b>Description</b><br /><%= f.text_area :description %></p>
  <p><b>Price</b><br /><%= f.text_field :price %></p>
  <p><b>Seller</b><br /><%= f.text_field :seller_id %></p>
  <p><b>Email</b><br /><%= f.text_field :email %></p>
  <p><b>Img url</b><br /><%= f.text_field :img_url %></p>
  <p><%= f.submit "Create" %></p>
<% end %>

Attachments:
http://www.ruby-forum.com/attachment/6737/No_Forms_Showing.jpg

Try
<%= form_for... %>

Colin