Jibi, I have followed your instruction and applied it on BES 4.1.5 with no success. I got the error message:
C:\>BBDBUpdate.exe -db BESTESTDB -input EnableRichContent.sql
BlackBerry Configuration Database Update tool Version 4.1.4.8
Copyright (c) Research In Motion, Ltd. 2000-2007. All rights reserved.
Modification date: Aug 8 2007

[20000] (17:30:08.218):{0x1124} Connect to database server: localhost
[20000] (17:30:08.218):{0x1124} Database name: BESTESTDB
[10000] (17:30:25.000):{0x1124} Failed to open database connection


What did I do wrong?
Thanks!

EDIT:
from BBDBUpate Log

[20000] (04/19 17:30:08.218):{0x1124} Connect to database server: localhost
[20000] (04/19 17:30:08.218):{0x1124} Database name: BESTESTDB
[40000] (04/19 17:30:08.218):{0x1124} Authentication Type: Windows Authentication
[40000] (04/19 17:30:25.000):{0x1124} ...connection failed (ADOConnectionItem::ConnectToDB(): COM Error 0x80004005 - Cannot connect to database: Cannot open database).
[10000] (04/19 17:30:25.000):{0x1124} Failed to open database connection