A bit off topic:
Navigator 5? I know very vell that Dynamics NAV used to be called Navision and Navision used to be called Navigator, but only in Denmark. In the US it was originally introduced as Avista, but then it got the name Navision, as in the rest of the world.
AND there has never been any version called Navigator 5. There was Navigator 1, 2 and 3, with the last version being called 3.56. This was the DOS based product. With the introduction of the Windows version in 1995 it was first called Navigator Financials, but already with the release of version 2 it was renamed Navision Financials globally.