Hi River,
The Windows Apollo utility is available for download from the support page. You can also use this link.
https://www.promise.com/DownloadFile.aspx?DownloadFileUID=4732
I have it running on 3 different Windows 7 machines and it works fine. You can either claim an unclaimed Apollo or Apollo 2 Duo, or you can login to a claimed Apollo. You can connect to several Apollos at the same time (mine sees 4 Apollos).
Note, the version for iOS and Android are called 'Applications', the Windows version is below it in the section called 'Utilities'.