Hi locs4dayz, and welcome to the forums.
If I recall correctly, all maps (Europe, North America, etc) may actually be included on the installation DVD. If that's the case, you just need to purchase the activation code for the geographical area you desire.
Alternatively, buy the current version of PC Navigator 10 to get the freshest map data available. You may purchase it directly from mapfactor.com / mapfactor.cz, or from directions.ltd.uk. There may also be some distributors who carry the product.