[Erro]

Hello all. I am working with Inventor and have run across a problem. I would like to use the pre-generated models for Bosch aluminum stock from the Bosch website, but am having trouble importing it. I have saved it to my desktop in the appropriate Inventor format (.sat) but cannot open it. Windows keeps telling me that it doesn't recognize the format and needs to know what program created it, so I try to tell it that Inventor created it, but it won't listen. Any recommendations would be very much appreciated. Anything that works- other sites, formats, etc.