Internet Help!

[Daaltonwow]

So I might be moving into my Aunt's house for awhile. She uses a new linksys router all the way up in her room. She uses a wired connection into it, although I think there is also wireless internet throughout the house, i'm not sure if it is setup right considering she just plugs an ethernet cord into the router.

I will be moving into her basement which is realllllllly far from her room, 2 floors. How can I get a wired connection down there into my laptop using her ISP. I can buy my own router, or something...Also if there is in fact wireless, is there any way I can boost the signal so that is is strong all the way down in her basement?

Thanks!