If you created a new valid .htaccess and uploaded it in ASCII it should have had something on these lines:
If you wanted to to process *.htm* as PHP maybe you should have tested the .htaccess in a sub directory first. The phpinfo() can tell people about your server environment and file-system structure so usually it's best not to publicly post it because if it's not hardened you're giving outsiders extra info/ammo.
AddType application/x-httpd-php .html .htm
# Process *.htm and *.html as PHP