Forefront Threat Management Gateway (TMG) 2010 runs exclusively on 64-bit Windows Server 2008 or Windows Server 2008R2. This means you will not be able to install the TMG management console included with the installation media on any 32-bit Windows machine. What if you wish to manage your TMG firewalls from a 32-bit Windows operating system? The answer is simple. Download the 32-bit version of the TMG management console. After registering, click the download link and then download the file TMG_ENU_Management_x86.exe. Now you can manage your TMG firewalls from a 32-bit Windows desktop or server operating system!



[...] http://tmgblog.richardhicks.com/2010/01/23/tmg-man…ndows/ [...]
Why can’t I install the ISA 2006 MMC module onto a 64 bit Windows PC?
It simply isn’t a compatabile 64-bit Windows application, unfortunately. Your only options for managing legacy ISA 2006 systems are RDP to the desktop of your ISA firewall, or keep an old x86 system around (VM?).
[...] Richard Hicks (MVP, sőt Forefront MVP kolléga) blogbejegyzése erről (ebben van a link is a letöltéshez) http://tmgblog.richardhicks.com/2010/01/23/tmg-management-console-for-32-bit-windows/ [...]