I couldn't sleep so I gave it a shot. It still can't find the dongle, but I'll report what it did.
As pooter explained you need to open an admin command prompt, type "bcdedit /set testsigning on" and restart your computer. If you did it right you'll see some test mode info in the bottom left hand corner of your desktop.
After that the hasp installer "hdd32.exe" installed fine. The only problem with that..... note that it's the 32 bit version... we need the 64 bit one. The reg file also merges successfully.... no surprise there. Multikey32/install.cmd and multikey64/install.cmd both fail. Also right-clicking on the inf files still gives driver signing complaints. I believe that is because these are xp drivers and it doesn't necessarily have to do with the signing... I'll try some things.
If the hardlock dongle is the "Aladdin hardlock" there are drivers on this site:
http://www.driverscape.com/download/aladdin-hardlock-keyI don't know if they are what is needed as a specific version might be required.
So if someone is more familiar with the dongle software this should be doable.