From the manufacturer's website:
"Please follow the steps below to purchase a new map or another extra option:
1. Open the ROUTE 66 Sync application (launch the Sync CD/DVD). Please connect the RAC device to the PC via the USB cable.
2. Click on the 'Switch to ROUTE 66 Store' button at the top of the screen to access the ROUTE 66 Online Shop.
3. Choose an option on the left hand side you wish to buy.
4. Click on 'Add to cart', then on 'Checkout'.
5. On the next screen, introduce your email, phone number, and country. Then click on 'Next'.
6. On the next screen choose your payment method.
7. Then introduce your payment details and click on 'Submit'.
8. The option you bought will then be downloaded to PC and then copied to the device.
9. Click on 'Close' and disconnect your device."
If you've lost the disk that came with the satnav, you can download the software from this link:
http://www.66.com/static_media/updates/sync9/ROUTE%2066%20Sync%20setup.exe
If you've lost the manual, it's here:
http://www.66.com/static_media/manuals/Rac/ROUTE%2066%20RAC%20Mobile%208%20User%20Manual_en.pdf
Chris