Once you are ready to share your manuscript, you can export it using Scrivener's powerful compilation functionality. You can make it into a PDF document, an RTF file, an HTML webpage, and more. A simple template engine allows some control over the manuscript's appearance, but Scrivener doesn't try to be a full-fledged typesetting program.

Scrivener for Windows lags behind its Mac counterpart in version numbers and features, but the version I evaluated, 1.2, feels like a mature and powerful product. If you are serious about writing, you should check it out.