Thank you very much for all your guy's help! I'm not to computer savy, but "hey"-I'm learning ;)

Edit: and will the computer with the wireless network adapter automatically recognize the router downstairs and I will have the internet upstairs, of course following a few steps?

The post of the free best software you just posted shows this to be very true....I suggest that you don't post things of such untill you are better advised on what it is you are posting.

http://www.syschat.com/top-best-freeware-3588.html

I was asking for people's advice and telling them what I am using as of now, I am not advertising or anything