The re-released Availability Management Pack has now released to the Web http://www.microsoft.com/downloads/details.aspx?FamilyID=8a61d369-b785-4550-bde8-84e734ec5e40&DisplayLang=en

Per my previous blog to http://blogs.technet.com/smsandmom/archive/2006/08/21/448348.aspx this has several requirements. Please read the release notes and updated MP Guide for details.