Video Card problem???

	m_VB[0].x = 0;
	m_VB[0].y = 0;
	m_VB[0].z = 0.0f;
	m_VB[0].color = D3DCOLOR_ARGB(255,0,255,0);
	m_VB[0].u = 0.0;
	m_VB[0].v = 0.0;

	m_VB[1].x = 50;
	m_VB[1].y = 0;
	m_VB[1].z = 0.0f;
	m_VB[1].color = D3DCOLOR_ARGB(255,0,255,0);
	m_VB[1].u = 1.0;
	m_VB[1].v = 0.0;

	m_VB[2].x = 0;
	m_VB[2].y = 50;
	m_VB[2].z = 0.0f;
	m_VB[2].color = D3DCOLOR_ARGB(255,0,255,0);
	m_VB[2].u = 0.0;
	m_VB[2].v = 1.0;

	m_VB[3].x = 50;
	m_VB[3].y = 50;
	m_VB[3].z = 0.0f;
	m_VB[3].color = D3DCOLOR_ARGB(255,0,255,0);
	m_VB[3].u = 1.0;
	m_VB[3].v = 1.0;

	m_IB[0] = 0;
	m_IB[1] = 1;
	m_IB[2] = 2;
	m_IB[3] = 2;
	m_IB[4] = 1;
	m_IB[5] = 3;



	m_VB[4].x = 0;
	m_VB[4].y = 0;
	m_VB[4].z = 0.0f;
	m_VB[4].color = D3DCOLOR_ARGB(255,255,0,0);
	m_VB[4].u = 0.0;
	m_VB[4].v = 0.0;

	m_VB[5].x = 40;
	m_VB[5].y = 0;
	m_VB[5].z = 0.0f;
	m_VB[5].color = D3DCOLOR_ARGB(255,255,0,0);
	m_VB[5].u = 1.0;
	m_VB[5].v = 0.0;

	m_VB[6].x = 0;
	m_VB[6].y = 40;
	m_VB[6].z = 0.0f;
	m_VB[6].color = D3DCOLOR_ARGB(255,255,0,0);
	m_VB[6].u = 0.0;
	m_VB[6].v = 1.0;

	m_VB[7].x = 40;
	m_VB[7].y = 40;
	m_VB[7].z = 0.0f;
	m_VB[7].color = D3DCOLOR_ARGB(255,255,0,0);
	m_VB[7].u = 1.0;
	m_VB[7].v = 1.0;

	m_IB[6] = 4;
	m_IB[7] = 5;
	m_IB[8] = 6;
	m_IB[9] = 6;
	m_IB[10] = 5;
	m_IB[11] = 7;


	m_VB[8].x = 0;
	m_VB[8].y = 0;
	m_VB[8].z = 0.0f;
	m_VB[8].color = D3DCOLOR_ARGB(255,255,255,255);
	m_VB[8].u = 0.0;
	m_VB[8].v = 0.0;

	m_VB[9].x = 30;
	m_VB[9].y = 0;
	m_VB[9].z = 0.0f;
	m_VB[9].color = D3DCOLOR_ARGB(255,255,255,255);
	m_VB[9].u = 1.0;
	m_VB[9].v = 0.0;

	m_VB[10].x = 0;
	m_VB[10].y = 30;
	m_VB[10].z = 0.0f;
	m_VB[10].color = D3DCOLOR_ARGB(255,255,255,255);
	m_VB[10].u = 0.0;
	m_VB[10].v = 1.0;

	m_VB[11].x = 30;
	m_VB[11].y = 30;
	m_VB[11].z = 0.0f;
	m_VB[11].color = D3DCOLOR_ARGB(255,255,255,255);
	m_VB[11].u = 1.0;
	m_VB[11].v = 1.0;

	m_IB[12] = 8;
	m_IB[13] = 9;
	m_IB[14] = 10;
	m_IB[15] = 10;
	m_IB[16] = 9;
	m_IB[17] = 11;

	G_NUM_VERTS_IN_UI = 12;
	G_NUM_INDICES_IN_UI = 18;


	GetCurrentDisplayDevice()->CreateVertexBuffer
		( G_NUM_VERTS_IN_UI * sizeof(CUSTOMUIVERTEX), 0,
		  D3DFVF_CUSTOMUIVERTEX, D3DPOOL_DEFAULT, &m_pUIVB, NULL );

	CUSTOMUIVERTEX* pVertices;
	
	hr = m_pUIVB->Lock(0, G_NUM_VERTS_IN_UI * sizeof(CUSTOMUIVERTEX), (void**)&pVertices, 0);
	memcpy(pVertices, m_VB, G_NUM_VERTS_IN_UI * sizeof(CUSTOMUIVERTEX));
	m_pUIVB->Unlock();
	GetCurrentDisplayDevice()->CreateIndexBuffer
		( G_NUM_INDICES_IN_UI * sizeof(WORD), D3DUSAGE_WRITEONLY,
		  D3DFMT_INDEX16, D3DPOOL_DEFAULT, &m_pUIIB, NULL);

	WORD* pIndices;
	hr = m_pUIIB->Lock(0, G_NUM_INDICES_IN_UI * sizeof(WORD), (void**)&pIndices, 0);
	memcpy(pIndices, m_IB, G_NUM_INDICES_IN_UI * sizeof(WORD));
	m_pUIIB->Unlock();

//And I render each of the three quads like this

//GetCurrentDisplayDevice()->DrawIndexedPrimitive(D3DPT_TRIANGLELIST, 0, 0, 4, 0, 2);

GetCurrentDisplayDevice()->DrawIndexedPrimitive(D3DPT_TRIANGLELIST, 0, 6, 4, 6, 2);
GetCurrentDisplayDevice()->DrawIndexedPrimitive(D3DPT_TRIANGLELIST, 0, 12, 4, 12, 2);