Games Workshop: Skaven- The "official" site where you can get more information about the Skaven army, new releases and upcoming and current events.

GW Online Store: Skaven- You can peruse the currently available miniature line here. Note that the above link points to the Canadian store, so if you live elsewhere you'll need to back out and change countries to get the correct pricing.

The Skaven Archive- A nice site for brushing up on Skaven culture, history and tactics. There are also stories from the battlefield and even a Skaven font (of which I've made great use on this site :)).

Circle of the Horned Rat - A Skaven webring with many helpful sites and useful information.

The Warp.net - a page devoted to all things Warhammer. Very well organized and easy to get in touch with other players of the game.