requirement specification

I'm a student and I have to provide a project idea with a user requirement specification. Can anyone help me with at least some links or examples. And it would be great if one could provide me with some actual examples, not the how to's and manuals

Thnks

wait..
It would be nice if you can explain MORE about what you need to be done, since it seems a bit confusing.

Well you know how it is done. Before starting to develop something the client and the developer sit down and formalize all the requirements. This makes up the system specification. And I was wondering if any one had here had any examples (particularly with UML diagrams) or a the least some how-to-do-it resources.

P.S Formally the structure of the document (specification) looks something like this:
1. Foreward
2. Bussiness goals (how the system would increase the income)
3. Client requirements
4. Scenarios using UML (what the system should do)
5. ROI analysis (return on investment)

Just curious: Did they not discuss/cover this material and you're expected to magically know it, or were you not paying attention that day and that's why you're here?

We were given about 4 pages of what should be in the document and 3 weeks to produce it. That's it. It's just that in our university I noticed lecturers speaking about theory not telling a single word about practice so everyone has to work on his own to learn this or that programming language or whatever. This way of doing things is fine with me, seriously.
I enjoy learning on my own rather than sitting the whole day listening to dull idiotic lecturers. It's just that there are no books and materials of writing a specification so that's how I'm here