Adding image using html into a view file


I have built a simple application using scaffolding and i have added a
background image to my index pages of each model. This is using CSS
and i have the background image in the image folder within the rails

However, i am unable to add a single image to an individual 'view'
page. I cant do this in css because i only want it on one page. When i
add an image to a single view page using the following code,:

<img src="logo.gif" alt="logo" />

i check my browser and it comes up with a small box with a red cross
in it saying 'logo'. But not the image.

Can someone please explain what i can do in simple terms since i am a
beginner at this sort of stuff.




<%= image_tag 'logo.gif', :alt => 'logo %>