Hi, we have 3 laptops running of a router. We keep

Without knowing how you have it set up my helps is limited. If you want and easyway to keep it all going smooth you need a network manager, if you don't already.
The quick and easy answer would be to get a network management program. For 30-50 dollars you could up and running and protected.
Network Magic (I use it) is a good one, easy to use and very good.
You can get it from the link I have provided below..
http://www.purenetworks.com/

Thank you for the chance to help
I do hope the information has helped you.

Randy
FixYa Support Expert