Cable and Internet connection help

I would switch to the 4 way, less chance for leaks IMO.

For the PC you can use something similar to this for a wireless connection. I have one on the wife's PC and it works just fine.

http://www.bestbuy.com/site/linksys...05825855&st=categoryid$abcat0503007&cp=2&lp=7

With that said, I'm not 100% sure how well it would work if the router is upstairs and you are in the basement with the PC. They do make some more expensive ones with amplified signal.

Why not just run an Ethernet cable from the router down to the PC and hard wire it?