Problem in Access Manager

Hi All

I have Installed AM and it was working fine...but i mistakenly changed the following in amconsole

Authentication Configuration service(ldapService) under the Organization Authentication Configuration drop-down in the 'Core' Authentication Module

configuration.

after that I couldnt get the login page..it shows "Configuration not found..return to login page"..after i click the link it just hangs with the same page..

Please help me on this ..how can I rechange the Authentication Configuration service(ldapService) in the 'Core' Authentication Module with out using the am console..

[632 byte] By [ashik_s] at [2007-11-26 8:59:53]