Chances are you want to have slightly different content for the home page of your WordPress blog. In theory it should be easy enough, use is_home() or is_front_page(). Sadly these methods are hit and miss to say the least. Instead try using:
if ($_SERVER["REQUEST_URI"] == '/' || $_SERVER["REQUEST_URI"] == '/index.php')
{
// Your home page specific code here
}
It’s not ideal, but it works.