They seem to open in an internet explorer type window, does anyone know:

• How long have HTA files been around? Have they been around since Windows 98?
• Do they rely on Internet Explorer being installed, and/or a certain version of it?
• If you choose another browser on the browser selection screen update for Windows 7, will HTA files still work?
• Do HTA files open on other browsers?
• Are HTA files windows-only?

There is a huge lack of documentation on google about HTA files, so it's tricky to work out. I need to present the client with a list of minimum requirements to ensure our HTA content CD will work.