This is how I did it with my Asus EeePC netbook with no CD_ROM drive.
First, download Macrium Relect imaging software. It's free and it rocks. Install it on the netbook and using an external USB drive, create an image of the entire drive of the netbook.
Then, using Macrium, create an Emergency boot device using a USB thumb drive. The steps are pretty simple and Macrium has all the steps needed. Then just get to the netbook bios and make sure the thing can boot from USB. When you need to do a restore, boot from the USB and have Macrium write the image you took onto the netbook drive.
Of course, you should do a new image to the USB drive on a weekly, or monthly basis depending on how irreplaceable your data is.
Okay, thank you. It’s just a notebook I use when I travel to check email, surf the internet so there’s nothing noteworthy on it. I don’t have a restore disk. I just needed one to restore the OS in case of a crash or some super bug.