If you want to leave it in the wb folder then just create an index.html file in the root folder with the following content, (this will redirect visitors from root to the wb folder):
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="
http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="REFRESH" content="0; URL=wb/">
</head>
</html>
Thanks. I found a Java script redirection example, which also had the meta-tag in case the user didn't have javascript enabled. so that's what I am using now.