[OT?] Anybody know a tool for...?

Is anybody aware of a Linux-based tool that can generate WinHelp files? Even better, would be one that comes with SuSE... I haven't ever done it, but some people who might like to leave Windows for Linux -- and for whom I've suggested Linux replacements for most other stuff that they do -- have a requirement to produce WinHelp. Other formats are not acceptable to their customers at this time. I don't know what to tell them. I just do PDFs or HTML for my stuff, so I've never had a need for WinHelp, myself. Suggestions? Experiences? Thanks, /kevin