Customize Error Message Display For Cdbexecption

Hi Folks,

I am trying to change the display for CDExecption and all before Entry Application Entry point.
Let me explain to you what i have done so far. I have provided an interface to set a application configuration variables like Database Connection Details,And predefined params and e.t.c

But i would like to handle all the error message with a customize display.Basically what i am looking for to handle a CDBExecption error of dtabase connection. If there is a false or blank entry for database details.

I don't want to show the Error message Simply.Just want to customize it.i am trying to change it by creating a view file under protected/views/system/ but it is not working.

Also i have tried to change this display with defining errorHandling component in main.php file But still its not done for me.

So,any suggestion,help would be appreciated.

Looking forward to hear from you.

Thanks and Regards,