There are plenty of options available to you.
Why not ditch windows altogether and install Linux on your HTPC. That way you could run CCcam natively and run an open source media centre type interface for EPG, channel switching etc.
You could still emulate windows under a VM environment if you wanted to.
You could also go the way you are suggesting by running CCcam on a Linux VM hosted on your windows box and connecting to it using any other EMU/Softcam that will run under windows and connect to CCcam (NewCS for example).
Because Enigma is not generally available (as far as I know) for intel based chips. You are limiting your options by thinking inside that box.
There are plenty of other open and closed source interfaces available to consider.
Qemu is a little more than an ordinary VM. You should probably check out some of the other freely available VMs which are quite capable of running linux under windows, or vice versa.
Let us know how you progress.