Beginning with KVM

First, do you all know why I verbosely and solely sticked to the SLES 11 documentation?
From my other thread:

And I don’t think mr tsu2 is nuts or something.

@nrickert:
Your comments begin to calm me down a bit, so thanks for that.
But then, was doing “modprobe vhost-net” as root user a big death mistake, very just like trying “lsmod --help” and getting the error instead of having just “man lsmod”? Did I put the whole OS host in danger or buggy? Do I need to clean reinstall yet again!?