Thanks for the replies.
I have spoken to uknavigation on E-bay.
After sending a photo of the 'version page' they said they have the correct disc for me.
Only cost £7.99 and if it doesn't work I can get a refund :-)
I did try and find an original disc, but not wanting to spend £65 on something that may not work.
Hopefully this new disc will sort my problem out, will keep you informed.