Adding custom fields to CRM Sales transactions

Question

What are the steps to add custom tab and fields to CRM transactions?
By the way, we are on CRM 6.0 and are using SAPGUI.
Thanks in advance
Srini

Answer 1

I tried using Easy Enhancement Workbench (EEWB) and was able to successfully generate the task under the project.
But now I am getting short dumps in transaction CRMD_ORDER. Snap shot of the error is below.
What happened?
    Error in the ABAP Application Program
    The current ABAP program "CL_EX_CRM_CUSTOMER_I_BADI=====CP" had to be
     terminated because it has
    come across a statement that unfortunately cannot be executed.
Runtime Errors         MOVE_CAST_ERROR
Except.                CX_SY_MOVE_CAST_ERROR
Date and Time          01/26/2011 16:52:47
Error analysis
    An exception occurred that is explained in detail below.
    The exception, which is assigned to class 'CX_SY_MOVE_CAST_ERROR', was not
     caught in
    procedure "IF_EX_CRM_CUSTOMER_I_BADI~CRM_CUSTOMER_I_SET_TITLE" "(METHOD)", nor
     was it propagated by a RAISING clause.
    Since the caller of the procedure could not have anticipated that the
    exception would occur, the current program is terminated.
    The reason for the exception is:
    It was tried to assign a reference to a rereference variable using the
    'CAST' operation ('?=' or 'MOVE ?TO').
    However, the current content of the source variable does not fit into
    the target variable.
    source type: "\CLASS=ZCL_IM_EEW_CUSTOMER_I01"
    target type: "\INTERFACE=IF_EX_CRM_CUSTOMER_I_BADI"
Also, is there a clean way to back out these changes? Will deleting the project undo these changes?
Thanks in advance
Srini