I wasn't aware of a direct connection. Neverwinter is a free-to-play MMO based upon the Neverwinter Nights series of RPGs that themselves are based upon Dungeons & Dragons. However, having done a little research in the wake of your question, I now see that The Neverwinter Saga is a saga written in the forgotten realms campaign world of D&D, a part of the Legend of Drizzt series (from Wikipedia):
So whilst I don't think he was directly involved (What you might be thinking of is How R.A. Salvatore Helped Bring Icewind Dale to Games Again for Dark Alliance), but it seems like Neverwinter Nights, and thus Neverwinter, are based on his work. I must say thank you for the question, It helped me learn something new.