mmmmm...
I tried this, and had lots of problems with games such as BF2 (as the popup window asking for authorisation is behind the BF2 screen). I tried preauthorising it (obviously I am not a techy, as I read the help section - as the IT help desk who work for me say - RTFM).
I eventually dropped it, and have installed Kerio personal instead - much more (gamer) user friendly.
And no, I am not a complete PC novice - I know just enough to be dangerous.