I forget where on earth I saw this but at one point I saw the classic "4 interlocking squares" vmware logo on a windows 7 login screen... I wanted just that graphic but never could find it so I created my own. Windows 7 user pictures are 128x128 and so I found a transparent PNG of the VMWare Workstation logo (orange/blue interlocking squares) and dropped it on a blue/black gradient in photopea (online photoshop clone).
I know most people use their own custom photos, the windows default ones, etc. but for those who want a VMWare user icon for their windows vista/7 VMs... here you go. I've included the the original PNG VMWare logo, the PSD, and the final PNG output... maybe someone can get more fancy with this than I did in less than 5 minutes.