My experience so far is that the 5550 does not work with Total Remote (see my post further down).
The Total Remote Web site indicates it does but the remote transmitter does not go in the socket (it is the right size plug but it just doesnt reach the socket!).
I tried putting an extender in and cutting the connector on the extender to fit into the hole in the iPAQ and it still does not work (it does send a signal as I can see it on a Camcorder).
So in short steer clear of Total Remote and save yourself the 30 dollars I wasted :-(
I wish Griffin would be honest and take the 5550 off the compatibility list on their web site as I do not seem to be the first person to post on this forum that it does not work. I can understand if a software fix would cure the incompatibility but the remote just not fitting in the socket is incredible that they claim compatibility!!!