Well the first thing you need to do is delete any files you moved outside of the PHP folder - this is never a good idea!
Second thing you need to do is verify a few things:
Did you add the PHP directory to your system's PATH environment variable? There's a link to the PHP manual on how to do this in the sticky in this forum.
Do you know for a fact that PHP is reading the php.ini file you're editing? For example, if you change some other directive (ex. change display_errors from Off to On) does phpinfo() reflect this change?
Did you restart your webserver after making a change to the php.ini file?