Errebian, an important Italian e-procurement company, appeared in VMware customers satisfaction list. Their adoption of GSX Server to virtualize a whole demilitarized zone (DMZ) providing .NET web hosting and more, was interesting enough for VMware folks to produce a case study. I personally managed all phases of the project: intial Return on Investiment (ROI) calculation, implementation, performance tuning and VMware case study submission and I need to say that working with Antares I.T. and VMware people it's really enjoyable.