get profile by user name

[ahmed_badawy]

hi all

i want edit the link of profile

member.php?action=showprofile&user_id=1

to

member.php?action=showprofile&user_name=admin

[ahmed_badawy]

  i need this they are important

[V@no]

in member.php find:
  if ($user_row = get_user_info($user_id)) {
    $user_homepage = (isset($user_row['user_homepage'])) ? format_url($user_row['user_homepage']) : REPLACE_EMPTY;

Insert ^above:
  if ($user_id == GUEST)
  {
    $user_name = (isset($HTTP_POST_VARS['user_name']) ? un_htmlspecialchars(trim($HTTP_POST_VARS['user_name'])) : (isset($HTTP_GET_VARS['user_name']) ? un_htmlspecialchars(trim($HTTP_GET_VARS['user_name'])) : ""));
    $sql = "SELECT ".get_user_table_field("", "user_id")."
            FROM ".USERS_TABLE."
            WHERE ".get_user_table_field("", "user_name")." = '".strtolower($user_name)."'
            LIMIT 1";
    if ($user_row = $site_db->query_firstrow($sql))
    {
      $user_id = $user_row['user_id'];
    }
  }

[ahmed_badawy]

thanx V@no but not getting info in profile page 

[V@no]

can I see it?

[ahmed_badawy]

thanx V@no now working

my bad i Replaced Instead of Insert above