You can't get the application for your Mac because it wasn't released for this operating system. You can check below the system requirements for the software:
- XP (Professional and Home) (Home only for TPP Clients)
- 2003 Server (Standard or Enterprise)
- VISTA Enterprise
- 2008 Server (Standard or Enterprise) (64 bit version)
- Windows 7 Professional (32 bit and 64 bit version)
You can check the following web site for additional information. To get the application running on your Mac, install Parallels Desktop then virtualize Windows and you should be able to run it.