Hi qurdina, and welcome to the forums. If you like your TomTom, and you just want something similar, only on a larger laptop screen, then consider Garmin Mobile PC, or Mapfactor PC Navigator. And if you ever need something more suitable for more complicated trip planing, you may look into Microsoft AutoRoute.
The above mentioned programs cover most of Europe, but not all of it. Before you buy any mapping software, do make sure the countries you need are covered.