Implementing Websense Webfilter - Windows Server 2012 / SQL Server 2012 and Webfilter v7.8

Hello,

We are about to migrate from Surfcontrol Webfilter to Websense Webfilter.

The idea is to create a new server with the latest software components available.

I understand Webfilter v7.8 is Windows Server 2012 compatible, but is only an upgrade - does this mean I will have to install v7.7 first, (which I downloaded previously), and then upgrade to v7.8?

In which case, will v7.7 install on WindowsServer 2012?

Also, is v7.8 compatible with SQL Server 2012? Which version of SQL server is included in the Webfilter v7.8 installation?

Lastly, we we're using ISA Server 2006 with Surfcontrol Webfilter, but I understand this product had been replaced with Microsoft Forefront (TMG) - but even this is not available to buy - is there a replacement for TMG that we can use?

Thanks.

Dave.