> VMware Server is not supported under Windows Vista. It is only
> supported under Windows 2000 SP3+ and Windows 2003 . Your best bet is
> to get Microsoft’s Installer Cleanup Utility to gracefully remove the
> leftover bits from your system.
Hope that helps.
In order to run Virtual Machines download the VMWare Workstation which does work on Windows Vista (I current use it on Windows Vista).
Copy loadperf.dll to \windows\sytem32\
Download from here.