But it doesn't take HTML as input. At least nothing I've seen says it does. GSView is a nice front-end to ghostscript which takes the learning curve out of it.
File -> Convert... -> (Device: pdfwrite, Resolution: 600 - OK) -> filename.pdf - Save.
Addendum - I see your point now.
You can setup your web browser to print to a PS file and have Ghostscript massage it and convert it to PDF. But then you're relying on your web browser's interpretation of how the page should look. I've had experiences with printing web pages which were far from satisfactory (e.g. Nav/Mac shrinking text to microscopic sizes). Having a tool which wasn't browser based would probably be more reliable.
Cheers,
Scott.