Go to this folder C:\users\**your_username**\local\AppDate\ironcladgames\sins of a solar empire\mods-entrenchment v1.041 or there C:\Documents and Settings\**YOUR_USERNAME**\Local Settings\Application Data\Ironclad Games\Sins of a Solar Empire\Mods-entrenchment v1.041, depending on you computer.
copy the distant stars folder there, launch entrenchment, go to options, mod, select distants star mods, click to unable then on apply, the game would freeze for a little moment (don't panic, it is normal, the game is loading the new files) and then it's done. Enjoy !