Site is http://www.wowstuff.com.
WordPress files are http://www.wowstuff.com/wp/.
Changed .htaccess file to redirect to WP site by changing:
DirectoryIndex index.html, index.php to DirectoryIndex /wp/index.php.
New WP site (theme Revolt) is working, but once this is changed, I can no longer get to the WP Admin login page (www.wowstuff.com/wp/wp-admin).
Hosted on Site5.
Greatly appreciate any help.