Yeaa, GTA 4 rocks.
I asked it cos there is one project called IVMP ( and another called openIV??? ) but MTA is the best GTA online mod I've ever played.
On the other hand, I don't know much about Script Languages but friends tell me that the script language that IVMP uses is Squirrel and is worst than LUA ( MTA language ).
I wolud like create a GTA IV server and try vehicle mods, custom maps, multiplayed modes, ..., and I 'd like to use MTA