what is the php page after registration? - Joomla! Forum - community, help and support

hi, there

i new joomla , trying modification on site built on joomla, when sumbit user information in registration page, these information can send other databases besides joomla database. found registration page url strange "http://www.mycompany.com//members/create-an-account.html", after sumbited, confirmation page's url strange "http://www.mycompany.com//members/community.html". want add code confirmation page,so can data transfer job, cannot find it. can tell me confirmation page is, please? also, "//members", why 2 slashes?

regards
m

check $mosconfig_live_site variable in configuration.php. looks added trailing slash - remove it. using  opensef. can turn off actual page url or can modify url suit needs through third party sef component.