Sodium

are there any risks of using it, like downloading virus and such things? if so should i download some programs to check on that?

as for the router thing, i am on a laptop with wireless connection. but the house is wired up with a router because i share the connection with 3 other computer. what is the setting up the port with the firewall for? and how it is done.

sorry for asking these noob questions as some of you have probably answered them 1000 times before.