HIPAA Security Rule Toolkit is now available on the NIST website.
http://scap.nist.gov/hipaa/
I first saw a demo of this toolkit at the NIST/OCR Conference back in May. Here's a link to the video webcast for that conference in case you would be interested in seeing the initial demo of the toolkit (it's the last one on the list):
http://www.ebmcdn.net/nist/flash/nist-051011/nist-051011-archive.html