//The problem is, if I enable blending, then the texture isn't displayed. If I disable it, it's there (however, the transparent pixels on texture's image are black)
//Texture loading part:
   glEnable(GL_TEXTURE_2D);

   glGenTextures( 1, &tex );
   glBindTexture( GL_TEXTURE_2D, tex );

     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);

    glTexImage2D( GL_TEXTURE_2D, 0, image->format->BytesPerPixel, w, h, 0, texture_format, GL_UNSIGNED_BYTE, image->pixels );

   glDisable(GL_TEXTURE_2D);


//Drawing part (blending is enabled, depth test disabled)

        glEnable(GL_TEXTURE_2D);
        glEnable(GL_COLOR_MATERIAL);

        glColor4f( m_r, m_g, m_b, m_a );
        glBindTexture( GL_TEXTURE_2D, tex->tex );
            glCallList(m_draw_texture);//draws from a list I've set up and tested (works)

        glDisable(GL_TEXTURE_2D);