Does this telly have 3 scart inputs ? if so would the following be easier ? Connect scart out of DVD to scart 3 on the tv. If my plan works (and it might not !) switch on the dvd and the tv should 'go' to external 3 - then press 'external select' on the tv remote and it should go to the 'next one up' ie, ext 4. Pretty sure this would work on my ZP48 and may work on your ZP38 if it is similar. Not quite what you wanted but reduces the 'problem' to simply switching the dvd on using the remote control and then one press on the remote control ? as i say, might not work but worth a try if you have a spare scart lead (with wiring for remote signaling). Regards, yt.