Reading Usable Help
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Gordon R. Meyer
Creating dynamic Help with JSP
In the pursuit of dynamic Help, the ability to customize help pages on-the-fly is a basic requirement. To that end, David Castro provides an overview of using JavaServer Pages for Web-based Online Help.
Available at the same location, a WinWriters JumpStart tutorial for serving HTML documents from a database. This technique is essential for dynamic Help, but can also save documentation production time and streamline in-house practices for static Help too.
Both are good references for getting started with the technologies. The tools are here, but how you use them is up to you. On that note, see Environmentally-contextual Help.