For more information about the details of configuring MSMQ foreign sites See “Configuring cross-platform messaging”http://www.microsoft.com/technet/treeview/default.asp?url=/technet/prodtechnol/windowsserver2003/proddocs/standard/msmqconcepts/sag_msmqconcepts_admforeign.asp
For more information about how to configure and use the MSMQ-MQSeries Bridge See “Chapter 13 — MSMQ-MQSeries Bridge Configuration Guide” http://www.microsoft.com/technet/treeview/default.asp?url=/technet/prodtechnol/host/reskit/part3/hisrkc13.asp?frame=true