WEP in itself is broken and shouldn't be used anyway. It's as bad as running an open network.
I've read about the various attacks but so far I don't see a simple self contained tool, running on a normal windoze laptop, which just goes and does it. The normal attacks involve various unix-based tools and nobody short of an ultra-geek is going to be doing that.
Is there a meaningful attack on WPA/PSK? Ignore the dictionary attack for now, which is obvious, but trivial to defeat.