Community ManagerShift 2 Unleashed is available via Origin so you should be able to redeem your Product Code (CD Key) in Origin and then play via the Origin client:
https://help.ea.com/en-us/help/origin/origin/origin-code-redemption-faq
It is also possible to have that disc replaced for a relatively small fee:
https://help.ea.com/en-us/help/account/ea-uk-warranty-policy
Thanks.
@EA_Barry - Normally NFSU2 refers to NFS Underground 2, as opposed to Shift 2 Unleashed. Since Underground 2 is a two cd game, with disk 2 as the play disk (copy protection), I don't know if Origin converted it into a downloadable game.
Community ManagerTY @rcgldr
Underground is not available on Origin but it is possible an Advisor can help you here.
Click the following link to make contact with an EA Game Advisor: https://help.ea.com/en/contact-us/
For help with contacting an Advisor, please see this link: http://answers.ea.com/t5/Technical-Issues/How-to-contact-an-Advisor-via-EA-Help/td-p/5650100
Thanks.
