For folks who are looking to ID spiders, one of the best online resources is the spiders section at Bugguide.net. Their main spider page is
http://bugguide.net/node/view/1954If you have good images (where the spider takes up more than 70% of the image and hasn't been stepped on or chewed by the cat) then please feel free to also post them at the Nearctic Forum (link in my signature below), otherwise send them to BugGuide.
Just kidding -- no matter where, you need reasonably sharp images of the spider, not the table, the floor or the bathtub, just spider, from one side of the picture to the other. (You laugh now, but if you spend a little time browsing through "what bug is this" pictures, you'll see what I mean.) :-)
-K