Susan,

My understanding is that Office must be licensed on the RDS server for the amount of RDS users you want to be able to use it. So you would pay for the RDS CAL and the MS Office CAL. The RDS profiles are basically your "workstations" and therefore Excel Direct will only look for the Excel exe on that profile on the server.

So if you don't want to pay the Office licensing for all the new RDS users, you would have to use Open Office for the Excel Direct function to work.

It doesn't stop you from using Office on the local machines. But Adagio won't be able to "find" your Excel (or Outlook if you're using MAPI) on your local desktop.