If you think S&T 2009 looks old-fashioned, you should see what S&T 2008 looked like. In fact, the predecessor to S&T dates back to the late 1980s, when Windows was at version 2.0.
It does have a full-screen navigation mode that looks a little better than the map mode. However, S&T's real forte is in trip-planning, because it started life as a trip-planning program, without GPS navigation features.
A favored combination on this board seems to be S&T for trip-planning, and iGuidance for navigation. But if you just need to get from point A to point B, you probably don't need S&T. (Given the relative pricing, though, it's not much of an investment for the additional functionality ...)