I was told by one of our group members on Facebook, your forum would need these files to run the free to play MMOs by Cryptic. They are availble from our Facebook group, in our files section located here.
Otherwise these game require the Arc Launcher which is (in most opinions) bloat on your HDD and memory.
I am sorry, I have no clue how they should be installed on your OS. One member is running both ST and NW on a Zotac micro PC with Linux. To the best of my knowledge, you can download these files without joining our group. However you are required to own a Facebook account.