As I understand it, only FrontPage Express is free. No website should be trying to install FrontPage 2000. If it is trying to install it, it is likely a trojan and that would make it a nasty site that you want to avoid or only browse with a text browser like
Lynx. Or if you are running internet explorer, then go to Tools...Internet Options...Security...Restricted sites...Sites, and add this site. Myself, I would just stop using that site.