RECT		rctWindow;

// Get Window Dimensions
GetClientRect(g_window->hWnd,&rctWindow);

// Select The Projection Matrix
glMatrixMode(GL_PROJECTION);

// Store The Projection Matrix
glPushMatrix();

// Reset The Projection Matrix
glLoadIdentity();

// Set Up An Ortho Screen
glOrtho(0, rctWindow.right, 0, rctWindow.bottom, -1, 1);

// Select The Modelview Matrix
glMatrixMode(GL_MODELVIEW);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);

   //---
   // DO SOME Ortho shit
   //---

// Select The Projection Matrix
glMatrixMode(GL_PROJECTION);

// Restore The Old Projection Matrix
glPopMatrix();

// Select The Modelview Matrix
glMatrixMode(GL_MODELVIEW);