***** Microsoft Corp. has discontinued the FrontPage development in 2006 and this software is now completely outdated. That is why SiteGround servers are no longer compatible with FrontPage.*****
In which directory should I publish my websiteYou can publish your site in any directory inside the public_html one. We have a nice tutorial on publishing websites with FrontPage which can be found on the following link:
http://www.siteground.com/tutorials/frontpage/frontpage_installation.htm