But let's skip all that and start with this is pretty deep stuff. Examples abound at https://www.google.com/search?hl=en&as_q=route+control+on+windows+7 so you are going to get a trial by fire doing this.

I like the netroutview tool as reading NET ROUTE output is too hard on the new networker.

Also, why do this at all? I mean with switched hubs you are not reducing network traffic and such. I've found new networkers take this on in some (lost) hope of reducing network traffic but a switching hub already did that.

I see you also have a DNS running. That is something I'd like to hear which DNS app/server you installed.
Bob