I have gotten some help in the past and now understand more about the routers. But I still need help with a few things.

I want to know, how I can figure out if when I use my router and the rjxxx(numbers I don't remember) cables how will I know if the computer will have them plug into it or if I will need to go buy like an adapter. Should they just fit in and work in any random phone line looking port? Do they need specific ports inorder to work and what not?

Also, I am guessing my NIC is the adapter that makes it into a usb port in the back of my current computer. So does that mean to plug it into my router I will need it to be the usb connection? Or what kind of port will it need to go into the router? (modem going into the router)

Note: currently I just have the modem going into 1 computer and intend to get a router(wired) and put it into 2 computers.

Our house usually has a lot of dust and hair going around because we have dogs and cats. I was wondering, would having an ionic air cleaner too close to computers, manage to cause any problems? I wasn't sure since I don't know if maybe the electric cleaning of the air might do something or have a sort of electric field.

I can try to explain it better if needed. But my main concern would be having one of those air cleaners too close to computers manage to cause any problems?

For my thermaltake case, the connector is 3 prong, for my 680i mobo the connection needs to be 2 prong. I read the manual and it says somehow I am supposed to cut/snap off the middle connector and use the 1 and 3 to connect to the pins.

Has anyone else done this and know exactly how it works?

So if like I cut out the middle connector the 1 and 3 can be bent or pushed together some how to fit the 2 prongs it needs to go to.