New laptop came with DVD installation disk but no DVD drive. Advice?

I bought the HP Mini 5102 which is perfect for travel. But when I booted up for the first time, it automatically installed Windows XP operating system. Which is not a disaster, but I wanted Windows 7. There is a Windows 7 Installation disk (dvd) in the box, but no DVD drive. Is this some cruel joke or am I missing something? I have e-mailed HP tech support but they’re really slow and of course I want this fixed yesterday. Any advice?