This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
POI can create Word documents, but it has no functionality to read HTML, or convert documents in general. You'll either have to code that yourself, or use a document conversion solution like JODConverter.