Intelli-Site is a 32-bit application.  It is tested and supported in the 64-bit versions of the Windows 7 and Windows 2008 R2 operating systems.  

That being said, some integrations, mostly DVRs, are not available in 64-bit operating systems because the API provided by the manufacturers of those devices is not supported in a 64-bit environment.  You must contact the manufacturer of the equipment to find out if they support 64-bit Windows operating systems.  Your OSSI Sales Representative knows which version of the API was used for our integration.