In the asg_cl.properties, append the property integratedSecurity=true to the URL. Leave the username and password blank.
Example.
tibco.clientVar.CL/Database/Username=
tibco.clientVar.CL/Database/Password=
tibco.clientVar.CL/Database/Url=jdbc:sqlserver://x.x.x.x:1433;databaseName=asgstat;integratedSecurity=true
Install Central Logger as a Windows service and set Log On account to the AD account. Copy the file sqljdbc_auth.dll to a directory on the system path.