that router looks fine. you could try looking for some reviews if you feel like it. I read through the manual real quick, and it will support your verizon dsl no problem.
as far as pci cards, i'd get a matching "enhanced" card from the same company, such as this one: http://www.amazon.com/exec/obidos/tg/detail/-/B000068UY8/qid=1070382267/sr=1-1/ref=sr_1_1_etk-electronics/104-4549707-3036769?v=glance&s=electronics&n=172282
remember, you only need to get a wireless card for a computer that isn't close enough to use a wire. so, if you plan on leaving your computer in the same place, next to the dsl, you can just plug directly into it, no need for a wifi card there.
right, but I would need one for the other computer
my router is both wireless and you can plug into it, so its the BEST of both worlds! Netgear router man.. you cant go wrong