I could have bought a Windows 7 Recovery DVD

The HP site gives an option to purchase a Windows 7 Recovery DVD when you buy the dm1z at the HP.com store. It was $20. I went back to the site to see what options there were as you customize your unit. I must have opted not to buy it, figuring why pay $20 when I don't even have a DVD drive I can plug in to the unit. But I'm still without Windows 7 recovery media, still researching what my options are.