There are various trainers and editors out there for this game.
Man O Man, this game had such a huge following, and there was a
giant enthusiast edition made at the end of the series, that was up for years. I always liked this better than the MechWarrior series, but that's just me... EARTHSIEGE 1&2 were great too. I only ever saw ES1 available in DOS, but it was supposedly available in a W95 build too. Maybe Good Old Gamers
will make it available again. All three games would be so awesome. If you remember how many people frequented MechWarrior 3 & 4 on the MSN Gaming ZONE in the late 90's until 2005, well Earthsiege & Starsiege attracted just as many online gamers...
These are the links I could find:
There is more out there, but Starsiege2845 was the pinnacle development, and would have been the equivalent of a Starsiege 4 release. Wish SS 4 would get developed now !