Joaquin,
I have used MQ Series as a message transport.
The environment consisted of:
Java
JMS (Java Messaging Services)
JDBC connectivity to Sybase Adaptive Server 11.9.
This was a very high performance transactional environment.
I can understand wanting to use MQ Series as a transport FROM source systems TO a DW, but what kind of application are you building that would us it as an extraction tool?
Chuck