http://blogs.technet.com/v/archive/2008/04/16/vista-sp1.aspxСобственно, скачать можно тут: http://www.microsoft.com/downloads/details.aspx?FamilyID=f559842a-9c9b-4579-b64a-09146a0ba746&DisplayLang=ruru-RUCommunityServer 2.1 SP1 (Build: 61025.2)