Can not install PR-1.6.3.0

[TufenHuden]

I've tried to install PR-1.6.3.0 when trying setup.exe I get a message:

Please insert insert Disk 1 and click Ok.
If the files on this disk can found in a folder other
than the one displayed below,enter the correct path or Browse.

What disk do I need?old BF-2 disk?

I also tried the autorun.exe and this Install Error:
Unable to start the Project Reality:Bf-2 Installer Could
not find set.exe in the current directtory.
I dowloaded this from the Google drive download link-
in PR-So what wrong?