Lisa:
Lars joined AccSys Solutions on January 1, 2009 and can be contacted toll free at 1.888.534.4344 local 226. I'll also pass this message on to him. If he is not available one of our other support staff will be more than happy to assist you with your immediate needs.
The current versions of Adagio will run fine on a Windows 7 workstation. You will not be able to run ACCPAC Plus on a Windows 7 workstation so it's time to implement Adagio Puirchase Orders and convert your Report Master reports to ADagio Reports.
I'm not sure what version of Orion you have but it would be a safe bet that the current version supports Windows 7, however I don't believe that Orion support Adagio any longer (but I could be wrong).
I would be the person that would demo Adagio Purchase Orders and will contact you about setting up an appointment.