big problem

Hi! Im in trouble...... When i run my app in windowed mode i get about 1200 fps on my GF4. But when i try to switch to fullscreen fps drops down to 7 !!!!! do you belive it 7! This is my presentation parameters: // Width of the back buffer in pixels d3dpp.BackBufferWidth = bWindowed ? 0 : GAMEAREA_WIDTH; // Height of the back buffer in pixels d3dpp.BackBufferHeight = bWindowed ? 0 : GAMEAREA_HEIGHT; // Back buffer format d3dpp.BackBufferFormat = bWindowed ? d3ddm.Format : D3DFMT_A8R8G8B8; // Number of back buffers d3dpp.BackBufferCount = 1; // Multisampling type d3dpp.MultiSampleType = D3DMULTISAMPLE_NONE; // Swap effect d3dpp.SwapEffect = D3DSWAPEFFECT_COPY; // Window handle where rendering ocures d3dpp.hDeviceWindow = hWndTarget; // Windowed or fullscreen d3dpp.Windowed = bWindowed; // Let Direct3D manage the depth buffer d3dpp.EnableAutoDepthStencil = TRUE; // Set the depth buffer format to 16 bits d3dpp.AutoDepthStencilFormat = D3DFMT_D16; // Use the default refresh rate available d3dpp.FullScreen_RefreshRateInHz = 0; // Present the information as fast as possible d3dpp.FullScreen_PresentationInterval = bWindowed ? 0 : D3DPRESENT_INTERVAL_IMMEDIATE; // Allow the back buffer to be accessed for 2D work d3dpp.Flags = D3DPRESENTFLAG_LOCKABLE_BACKBUFFER; // Acquire a pointer to IDirect3DDevice8 hResult = g_pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWndTarget, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &g_pD3DDevice ); if( FAILED( hResult ) ) { OutputDebugString( "Could not create the render device" ); return E_FAIL; } Please help me if you see whats wrong.....