GET and POST to a webservice on ASP.net (c#)

Thank you Pylon
Hi Pylon you couldn't be more accurate on your recomendation to learn xml and http, I'm on that path too, the only fact is that I cannot wait to finish my training since I must finish this "project" for one subject in order to get my bachelor degree, therefore I'm doing all the learning at the same time... hopelly I find you on my path and you was really helpful, I tested your code but I get this output on the serial monitor:

connecting...
connected
H
disconnecting.

I presume that it is because of this code segment

void loop()
{
  // if there are incoming bytes available 
  // from the server, read them and print them:
  if (client.available()) {
    char c= client.read();
    Serial.print(c);
   }

But this is the SAME code I used to obtain the serial output that I mentioned on my first question.. so what did I scewed now? hope you can guide me here