i've already made a more complicated mp game from the lockweed tutorial so i know some basics and more...

so i guess i'll start with the players just controling a ball each and then make chat systems and then attacking then enemys and stuff...

But how do i go from a quake style arena game to a mmorpg i dont mean the battle system or anything, just the online differences , do i need to know how to use dlls or mysql & how should i get a server host? things like that? "gstnet"?