I'm thinking about purchasing a couple of wall sconces and I'm wondering how complicated they will be to wire.

Does anyone have experience with this? Is it easy? Any advice is appreciated. Thanks!

to the sconces I want to buy, in case that makes a difference:

http://www.alluminare.com/sconces.asp?src=my&SKU=W102-239;P;c65;29;35-9700-9700-STD-W002x1-SCWx1-0000-0-0