in my download folder I get
when I double click that it asks for which app to use to open it...so which app should be used?...or is the file in error?
That means that the download did not complete. the normal file should be a zip file.
Try to download it from this link:
Will CREO 4 run on windows 10 home or do I need windows 10 Pro?
you can run Creo 4.0 on Windows 10 Home ... it must 64-bit !