How to create use cases and what a use case document should look like?

[Linda Holder]

I am in the process of documenting a couple of systems, old and then the new and wanted to know if anyone had suggestions for use cases/structure/questions to ask? I am new to this and feel very lost.

thanks
Linda H

[David Newton]

Start here: http://en.wikipedia.org/wiki/Use_case

[Jim Barrows]

Tigris has these templates: ReadySET