dominicwhite's Xbox 360 Controller Profile for I-War 2: Edge of Chaos
 
Usage: Drop it on your I-War 2Configs directory, then select it from the available controller profiles in-game.

99% of the game is fully playable without touching the keyboard or mouse using this setup.
Subsystems management might be a bit quicker with a keyboard to hand, though. Camera controls are keyboard-only.

The analogue triggers DO work as full analogue throttle control.
They just have a larger dead-zone than you might expect. Squeeze gently to crawl along, squeeze hard to go full-burn.