Actually there are C++ run time routines that are required for anything past X2a (I think that was the last one), and those routines only get installed as part of Service Pack 1 for Windows 7, so anyone choosing to ignore all Windows updates beyond their initial install should know that SP1 MUST be then part of that install, or Sonar X2b and beyond will not even install.
(For sure they won't run, but I think the installer fails if the maintenance level is not a min of Win 7 + SP1)
I would also never ever suggest to someone that they skip applying Microsoft updates, in addition to my comments above. It is certainly each user's choice as to how they approach things, but I am quite certain that Cakewalk and Microsoft, and a hugely disproportionate percentage of the users out there would also not recommend deliberately running without maintenance applied - as a blanket statement.
At the very least, running without current maintenance would almost certainly result in nobody providing any support for any issues - and I wouldn't run any business where I depend on what I use to have support available. If I found out a studio I was using ran in an unsupported fashion, I would be out of there in a heartbeat, to protect my work.
Bob Bone