How to simulate the FPGA neural network in Altera

Could I convert Simulink blocks (where I composed the workable circuit for signals) to HDL? Where I could download the HDL Converter if I have matlab 6.5, how much size it take? I heard it covert but not all blocks, what are the main issues there—if my scheme has integrator, comparator(> operators), adder, substracter, switch (like selector in Labview), the sources of signals, and its output? Can I do it with the Labview to convert the diagram to HDL. Once more questions relates if it possible to compose analog, not binary, circuit in Altera? For example I heard the Sim2spice for Simuling to change it to FPAA, but I cannot find it anywhere. And I have DSP blockset, but when I launch it I got the error that I cannot find MAtlab—but I have MAtlab 6.5—so what version I should use for Altera 11, and maybe should place the MAtlab in DSP blockset folder? And it is interested what in particular DSP could do with my Simulink Blocks…