I have an "easy512-AC-RC relay. I can down load the programming cable but It's impossible to download the actual softer to program the damn relay. I'm using Windows 7 pro .

The software to program the Easy intelligent relays is no longer a free software package.  This will need to be purchased from an Eaton distributor.  The software needed to program the EASY512-AC-RC is part number EASY-SOFT-BASIC. If you do not have a local distributor, you can search for them using the link below:  

How To Buy Eaton Automation Products

It is unclear to me if you already have the programming cable, so I will also include the part numbers for these options:

Serial cable:  EASY-PC-CAB

USB Cable:  EASY-USB-CAB