These files can then be used to install the game again in the future, should you need to. Also, since you're only missing disc 1, if you can find a disc to borrow, copy it to your hard drive.
This will allow you to play once you return the disc. Download a no-CD/DVD crack for the game from. That expansion's disc will become the new play disc. Purchase and install an expansion to the game. There are a few things you can do about this: 1. However, the game won't run without an actual disc 1 in the drive (since you'll need to return it to whoever you borrow it from).
You can use someone else's disc 1 with your CD-key if you know someone else with the game.
