Create sprites automatically

I get the folder with the following structure from my designer*:

file.css

images/

Is there any tool which can automatically create sprite for images folder and replace all images references from file.css to appropriate sprite sections?

*It is actually not a designer (the man who creates design in, for example, Photoshop) but the man who makes html+css from it. How is this profession correctly called in English? In russian we have a separation into "дизайнер" (designer) and "верстальщик" (I would verbatim translate it as "markuper"). I am pretty sure there is the same separation in E开发者_如何学JAVAnglish.

Update.

I have found Sprite and Image Optimization library which is probably what I was looking for.

If you are going to use .NET a nice framework is Sprite & Image Optimization and you can find a nice Video tutorial to start with

http://www.youtube.com/watch?v=URuuSlLZcX0

And even Scott Hanselmen has a nice tutorial as well regarding this framework.