Preliminary results of testing. I have not yet had the chance to attempt slipstream. It is too late tonight. Running on SOURCE, driverpack reports : OS: Windows 2000 Professional - SP4 Running on SOURCESS, driverpack reports : OS: Windows 2000 Server - SP4. The results were derived from replacing the 20 files in the new set from the 41 files in the original set. Running on SOURCESS, driver pack reports : OS: Windows 2000 Server - SP4. The results wre derived from using ONLY the 20 files in the new set. In summary, the new FDV fileset changes the OS version. When I have the chance, I will see if the anomaly matters in the slightest although there is some software out there that will not load on Windows 2000 Server but will on Windows 2000 Profesional.