Here it's rented out and it's not a bad deal. You get a wifi dsl modem router that is supported by them and it works.
As to the ethernet card, they sell them or you buy one. It's cheap at geeks.com newegg.com at under 9 bucks.
I'm going to get DSL in the near future. I know that I will need to purchase the DSL modem from the company where I'll be getting my service. Would I also need to purchase an ethernet card for my computer as well?