Entre neste site Você encontrará muitoooos modelos XNA. =)

http://www.mexat.com/vb/threads/855265-%D8%A8%D8%B1%D9%86%D8%A7%D9%85%D8%AC-XNA-Lara-%D8%AA%D8%AD%D9%85%D9%8A%D9%84-%D8%B4%D8%B1%D8%AD