OpenGL with WIN 32

Hello,
I'm learning OpenGL, but I have lots of troubles at startup!
I want to draw some stuff in a window, so I "create" rendering context and make it corrent.After all I release and delete the device, but it don't work. I do this all in the window procedure as follows:

Code:

---

....
case WM_CREATE:
                PIXELFORMATDESCRIPTOR pfd;
                hDC = ::GetDC(hwnd);
                ZeroMemory( &pfd, sizeof( pfd ) );
                pfd.nSize = sizeof( pfd );
                pfd.nVersion = 1;
                pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL |
            PFD_DOUBLEBUFFER;
                pfd.iPixelType = PFD_TYPE_RGBA;
                pfd.cColorBits = 24;
                pfd.cDepthBits = 16;
                pfd.iLayerType = PFD_MAIN_PLANE;
                iFormat = ChoosePixelFormat( hDC, &pfd );
                SetPixelFormat( hDC, iFormat, &pfd );
                hRC = wglCreateContext( NULL );
                hRC = wglCreateContext( hDC );
                if(!wglMakeCurrent( hDC, hRC ))
                        MessageBox (NULL, "Main Window Initialization ERROR!",
                                "OpenGL Tester",MB_DEFBUTTON1);
        case WM_PAINT:
                glClear(GL_COLOR_BUFFER_BIT);
                glBegin(GL_POLYGON);
                glColor3f(1, 0, 0);
                glVertex2f(-5, -5);
                glVertex2f(-5, 5);
                glColor3f(0, 0, 1);
                glVertex2f(5, 5);
                glVertex2f(5, -5);
                glEnd();
                glFlush();
                break;
    case WM_DESTROY:
                wglMakeCurrent( NULL, NULL );
                wglDeleteContext( hRC );
                ::ReleaseDC( hwnd, hDC );
                ::PostQuitMessage (0);
        return 0; // return zero when processed

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If somebody can help me, I'l be happy.
Thank you in advance!

Dont rely on WM_PAINT for OpenGL......create a Render() function (or whatever), place your drawing code here and call it once in each messageloop......lookup NEHE over @ gamedev.net for ideas

How can I do that?
This procedure is called while the window is creating and it will call this render() function before hDC ad hRC are ready and before call of the stuff in WM_CREATE at all.

As I said - have a look at nehe