You can change the settings in the savegame SAVEx.GAM
Offset Contents
00-05 names of the planets
14 material A
15 material B
16 Material C where 00 = not present, 01 = present
1F planet status where 63 = free, 00 = player is owner
01 = computer is owner
21 base
23 depot
24 powerplant
25 production
26 mine
28 dock
29 schild where 63 = not present, 00 = present