Use content Base routing

create receive port and Send Port.
while configuring send port provide filter condition as
BTS.Receiveportname=<receive_portname you created>

BOTH ARE SAME YAAR, ANSWER 1 IS HEADING FOR ANSWER 2

yes, with out using orchestration, we can get the message  
it is done in the case of messaging solution.
Messaging solution means it is the biztalk solution with 
out orchestration.
go to biztalk adminstration console and create the receive 
port and create the send port .
in the send port configuration wizard, in the left 
pane,there is tab called filters which is used to provide 
subscription infornation to biztalk msg box, that tells the 
msgbox,"if any information comes on a particular port, 
please send that information to me
there is a filter property is there 

bts.receiveportname="ReceivePortName"

so when ever the msg is dropped to receive location 
configured with receive port, it comes to biztalk msgbox 
db, msgbox db sends the message to send port based on 
subscription information

This is how the message transformation is done without 
using orchesrtation

Regards,
Chaitanya Talasila