This is just a quick note for reference. Often I have to have client call Microsoft to get replacement disks for a variety of Microsoft software. From Microsoft’s site:
Also, to obtain a replacement disk, telephone the Microsoft Order Desk at (800) 360-7561, and request a replacement for your damaged disk. If you are outside the United States, contact the Microsoft subsidiary for your area.
Supposedly this costs between $10 – $25 depending on what you need. Also ownership has to be proven so make sure you register that software.