Lexus IS200 SatNav module?

Hiya,


I recently purchased on Ebay a 02 reg LS400 Module for my 02 reg-IS200 as the old one's lazer wouldn't read the disc. I was assured that it would work in my IS200. However, I've plugged it all in and upon my screen appears a message saying "Caution",then blah, blah, blah. It also displays the various languages info on the screen with my highlighted cursor stuck on "GB" as opposed any other nationality. So I thought great, just press "Enter" or move the cursor to either"I Agree" and I can start playing with the Satnav.

Unfortunatley, nothing happens. I can't move the cursor, but yet I can go back to the screen dsiplaying Languages, Maintenance and Calender. I cannot go further than these screens.

Does anyone know what I can do?

Is the LS400 module not suited to the IS200? I checked the part number and which starts 86841
I have 3 different discs, so they all can't be faulty.

With my old module I could look at the calendar and maintenance...

I would appreciate any advice, thanks in advance...