If there is a good site for that then I do not know of it…least not these days.

http://blog.emsisoft.com/ or http://www.f-secure.com/weblog/ will usually post some info on major new viruses but im thinking you want like a full analytical dump like showing all the registry entries and stuff like that and I don’t know of a single site that does them all. You can sometimes search for the specific virus name and find a site that covers those details. For example sophos has a pretty decent report on one of the variants of zero access.