You can simply install Caesar II 5.1 on Windows Vista and Seven 32bit with following procedure. Working 100% percent, tested by myself on Vista/7/7 installed on a virtual machine.
Do it step by step exactly as noted below and you'll be surprised how easy is that. If you already tried to install with no luck you'll have to uninstall whatever you installed and clean up your system32 folder from 795F1F82.hasp.
1- Download hdd32.exe from:
[This link Point to another website Only registered and activated users can see links.]
2- Run hdd32.exe.
3- Turn off your anti-virus program.
4- Run CaesarII 5.1 setup to insrall the software. Select default values for installation. Select green for Key installation. DO NOT restart at the end.
5- Copy 795F1F82.hasp to Windows system32 folder.
6- Right-Click on LND Emulator, select run as administrator.
7- Click install just once and then close the application.
8- Restart your computer.
Enjoy Caesar II 5.1 on your Windows 7/Vista.