I considered this after installing the 2007 CD a week ago because after installing it, my firewall decided to alert me to a new program requesting internet access.
It may have been unconnected, but I blocked it anyway.
I'll have to look at the syslog to see what it was - I think it was a Windows system file but one that has not asked for access before.
It is likely innocent as I have just had to reinstall Windows from scratch due to a rootkit virus that I couldn't shift !!
But the point is that like others here, it crossed my mind as something that they could do.