I have a similar issue, install of X3 on a brand new custom laptop and now I want to install Platinum but I don't want to connect to the net if I can avoid it.
Surely CW must realise that after there are so many issues with latency and Wi-Fi adaptors etc that certain people keep their music laptop as "clean" as possible. We should not be penalised or inconvenienced because we don't want to keep our music pc connected to the internet.
I can't even download the installers on to my music laptop because the Wi-Fi is so useless where I am, so I have to use the work connection and then transfer all the installers to my laptop. I haven't started the install yet as I want to make sure I know the correct procedure to follow.
So many people saying they are happy with Platinum, I'd love to be able to join them asap!