[X4U] Safari problem

[Robert]

Got a friend thats running 10.4 and Safari 3.0.4. He has set his home  
page to Yahoo.com. After he types any thing into Yahoo search box he  
gets http://best-result.com. We went into prefs and resetup yahoo as  
his home page, We reset safari. We also cleared the cache. We also  
went into his home folder, library, and moved the safari folder out.  
Restarted Safari again. Typed into the yahoo search box http://best-result.com 
  shows up. Any idea where we can get this not to show up. Thanks in  
advance. Bob