You have come to the right place as this is the 1 place that supports that game.The patch you are inquiring about is out of date and you need the 2552 patch look in the downloads section of
www.dynaverse.net to get it .You will need to use your SFC2 OP .exe to launch the game it is the desk top start cut.This will prevent the pop pop sounds from occurring.Then you can enter your cd key and hopefully it is the right one.They get mixed up with Empires at War sometimes.I believe it is a 6 digit key and EAW is 7.I hope this helps you out and we don't e-mail back for support.You might want check out the Dynaverse 2 forum and ask what it is like to play online in D2 .
Good Luck and any further questions please don't hessitate to ask anyone.
There are a lot of mods for this game as well.Check out the Enhancement Pack thread in the D2 forum .