Luckily the guys at dexterity pointed me at http://www.clickteam.com/English/index.htm And their excellent PatchMaker program, so I could do a quick program to patch Starship tycoon from 21.4 to 21.5 for those people who have bought the game, but exhausted the max 3 downloads that RegNow allow.
I'm having exploratory thoughts about my next game while I wait for users to send me some more info on a rare save game bug in ST.
I might add the patchmaker url to my links....