The amperage on that PSU is a little low.I would suggest goign with this PSU.
Seasonic 520watt $75+ Free Shippinghttp://www.newegg.com/Product/Product.aspx?Item=N82E16817371035
That PSU is a little bit more expensive but it's a really good reliable PSU.
What CPU and RAM do yo have?Can't really look for a mobo unless I know what you need/have.
EDIT: Just re-read your post and I see you already have that PSU.To answer your question, yes it already has the PCI-Express connectors which you will need for the card.And after looking at the PSU again you should actually be fine.It support up to 400watts and you won't even come close to using that much.