If I'm not mistaken it's been extremely difficult for the last year or two to even find a 32 bit computer on store shelves at places like Best Buy. While EncoreViewer 2.0 is compatible with Windows Vista and Windows 7, sadly this new version only supports the 32 bit versions of those operating systems. Regardless, that's another point for Respironics. It really should have been a feature in version 1.0. Rather than printing reports and then scanning the printed pages, end users can finally just click a button to create a PDF document in less than a second! Good for version 2.0, but let's not kid ourselves. I'm excited to report that Respironics added the ability to save reports as PDF files. The new software does, indeed, support the new PR System One CPAP machines and the SD cards used in those machines. Since you're probably wondering about that half point, let me explain. Respironics went 2 1/2 for 3 with this new release. Support for Windows Vista and Windows 7.Ability to save a file as a PDF document.Support for the new PR System One CPAP machines.We anticipated the new version would offer three things: We just got our hands on the newly-released Respironics EncoreViewer 2.0 software.