In order to bypass the "normal" method of downloading maps you have to have a license key for Navkit. Then you can get to a place that will allow you to download the DVD with the maps on it.

Sadly though if you have a license key then you already have this DVD and therefore already have the maps. (You also have a flash memory card with the maps on it.)

If you don't have the key... you will have to download the maps in the normal fashion. Which is going to take forever because they are being hammered.

You do this inside the OS2008 map tool. There is a menu option for maps and tabs on that that let you downlaod them. I gave up on that because it kept timing out... which is why I figured out how to use the Navkit maps.