VMWare Workstation 7.1 solves the Visual Studio rendering problem
The VMWare Workstation had a problem with Visual Studio 2010 rendering (in fact all WPF apps were affected) when the hardware graphic acceleration was turned on. But since version 7.1 this is no longer true.
Recently I updated my virtual machine (VMWare Workstation 7.1 + new VMWare Tools + turning graphic acceleration on) with Visual Studio 2010 and the rendering is correct. Finally I’ll enjoy the graphic card accelerated machine and lighten up CPU.