Thanks for the reply..

I played with the inter-key settings today after going through the FAQ for an answer, and managed to get it to work on the TV downstairs (Samsung LCD), so I thought I had it sorted...Tried it on my TV (Samsung LED), as the standard remotes are interchangeable, yet on my TV it still won't work!

I started at 100ms inter-key delay which worked fine on the downstairs LCD, and got up to 1000ms yet it still won't work on the LED!

I'm still fiddling with the delays but I'm all out of ideas, so really hoping someone else knows the problem and has a solution for me!