realview feature not working

I am running SolidWorks 2007 SP 3.1, I recently upgraded mycomputer video card to NVIDIA QUADRO FX 1500, worked fine exceptfor Real View feature does not work. Solidworks video cards testwebsite indicates that this type of video card supports realview. Iam not working in large assembly mode so that shouldn't affectrealview. A week later we bought NVIDIA QUADRO FX 3500 a morepowerful video card, I installed that one but still real viewfunction does not work. Am I missing something?SolidworksAdministration