[horde] Fatal Error when logged into horde

[Sylvia C]

HI ,
i just changed a line in 

/usr/share/toaster/htdocs/horde/config/horde.php
where i uncommented 
  $conf['prefs']['driver'] = 'sql';
  $conf['prefs']['params']['phptype'] = 'mysql';
  $conf['prefs']['params']['hostspec'] = 'localhost';
  $conf['prefs']['params']['username'] = 'horde';
  $conf['prefs']['params']['password'] = 'secretsecret';
  $conf['prefs']['params']['database'] = 'horde';
  $conf['prefs']['params']['table'] = 'horde_prefs';

  the lines so that the earlier error where i couldnt use any Account/Memo/Calender etc optins were not workin could work.
However I realised tht I am not able to send and recieve mails anymore 
and receive mails and being sent back to the same login screen with th efollowing error:
A fatal error has occurred:Required 'phptype' not specified in preferences configuration.[line 86 of /usr/share/toaster/htdocs/horde/lib/Prefs/sql.php]Details have been logged for the administrator.
As a newbie in SQL scripting, am really nervous,please help!
TIA,
Sylvia