I can't actually see the pepakura tab up the top, it's actually obscured by the search box! What does this mean?!
A good place to start is the 405th Pepakura Database, a community resource run by, and contributed to by members.
Link:
http://www.4shared.com/folder/rxBUzZt0/405th_Pepakura_Database.html
However, the search bar and google are both incredibly powerful for finding files that aren't on there. The more search terms you add, the more refined and specific your search is.
I have no shame in doing this...
CJ