Thank you.
So here's where I'm at now:
I copied/replaced the patch in the D2 folder with the mod patch, and I have the BNGateway up and running with the correct server info imputed (realm.median-xl.com) and it's selected. All seems good with the mod and things were going surprisingly smooth, but when I go to Multiplayer, Gateway: The Sin War in-game, I'm getting a 'Battlenet is unable to properly identify your Diablo 2 application version.' error.
Would anyone be so kind as to help me get past this? I pray that it's a common one, as I'm super hyped to start playing this incredible mod!
I am running the latest 1.14d version.
Thanks.