If you are connecting to a Microsoft SQL Server database and want to use Windows authentication, follow these steps:
1) Download the Microsoft JDBC Driver
2) Install it and place sqljdbc_auth.dll
into the jre/bin folder under the MyEclipse JDK , which is in the binary directory of the MyEclipse installation directory.
3) Configure the Microsoft SQL Server Driver in MyEclipse using the downloaded sqljdbc.jar
(or sqljdbc4.jar) in a new connection from the Database Explorer view.
4) Set the driver profile connection URL to be of the following format:
Where you replace "servername" with the proper name of your server and "instance" with the proper instance name of a running server.