I am trying to figure out for our new building what is best. Small Charter School, approx. 70 computers. Going to have 2 ISP’s to separate admin from students (long story, lots of better ways but this is what worked out). Never messed with something like this AT ALL. Assuming I will need two separate networks (at least AD’s), but I am trying to figure out foresting. Anyways, do I have to use two separate routers, or can I use a dual port that will separate the traffic, not share but separate. Or should I just share? (One ISP is T1, other is TW Cable 15 down, 2 up)