abdul_hanan on "Home page is not showing in wordpress website"

Hi everyone
i have a problem in wordpress website
the problem is my home page not showing and on clicking on its link in menu bar get an error page
here is website link:http://www.sovereign-wh.com/cgi-sys/defaultwebpage.cgi
but when i click on rest of the pages all of them working finely i don't know where is the problem kindly help me out
here is the link of other page wich is open normally without any error http://www.sovereign-wh.com/?page_id=7