PlanetsCentral

Hi all, I'm new to the forum and may be this subject has already been discussed. My apologoes if that's the case.

Some of my friends and myself, bought registered copies of planets 3 for MS-DOS about 20 years ago or more. Some of us have found those copies but would like to use Winplan 3.5 for Windows instead. Is there any way to update a registered copy of planets.exe to use Winplan.exe?

THanks in advnace,

Tulgas