We have just discovered and get impressed with Rolehelp. We are still testing different help authoring tools but this one with their simplicity, great user interface, feature reach capabilities and creation of 7 different help formats simply fascinate us. Of course, we have never wanted to spend 1000$ for such a tool, therefore Roledata offer of 59$ and free demo version with limitation of 50 topics is very, very attractive one. So, if you need fast, simple, free or at least cheap help authoring tool, visit them and you will get one great tool.
I'm sure we will use it in our data and schema compare solution in version 2008.
Synchronize and compare the structure and data of your SQL Server, Oracle, and MySQL databases - DBTyP.NET by BYPsoft