Ubuntu 9.10 Karmic Koala Netbook Remix is also available for download with the release of Ubuntu 9.10 Karmic Koala regular desktop version. For download of the Ubuntu Netbook Remix, visit this page.
You can get Ubuntu Netbook Remix running on your netbook in three easy steps. You will also require a thumb-drive or a CD for this installation.
Download the CD image from the page provided above. select a location with a good and powerful server nearest to your location. The ISO is 680 MB in size.
Next, burn the CD image to a disk or create a bootable thumb-drive from the downloaded ISO. You can use Unetbootin to create this bootable drive. Get Unetbootin here. A detailed installation guide is provided at this page.
Finally, install UNR from the bootable drive you just created.
That is all. Enjoy using Ubuntu Netbook Remix.