On the computer you are using for the installation of the mobile devices, and for synchronization if you are using a cradle, install the following software:
Windows Mobile Device Center 6.1 (32-bit or 64-bit); under Windows XP you need to install ActiveSync.
Microsoft .NET Compact Framework 3.5: Install NETCFSetupv35.msi.
SQL Server Compact 3.5 SP2 for devices: Install SSCEDeviceRuntime-ENU.msi.
Isah Mobile setup.exe, located in ..\Isah Mobile setup\Isah Mobile Device App. There are two versions of this program: one for Windows Mobile and one for Windows CE. Execute the setup.exe that applies to your situation.
If the computer will be used to set up Isah ML, you also need to install SQL Server Management Studio.