Aww RE4 models have already been extracted dude.
it take you years of schooling to learn coding too.
first off, you should prolly choose which coding langauge you are more able to work with. VB is of course is easier but cost an arm and a lag for the console. but whatever, try getting you hands on it, and try to find some basic VB tuts, maybe consider buying some books, even the VB for dummies should be half a foot thick.
once you get confortable coding with a langauge, "THEN".. maybe[b/] you'll be able to start looking into dissasembling.
See what your asking about, is;
A. how to make a program (easy learn a coding langauge)
B. how extract models (involves knowledge of 3D architecture and reverse engineering)
anyway, in summary, your prolly to nieve and unaware to learn anything like what you want with one single tut anyone could hope to post about.
Though in retospective, pulling 3d data isn't hard, you gotta figure out the header through a hex editor or disassembler or take pot shots at finding the vertex floats, then you move onto texture coordinates soo on.