In P4, Poser does not have a way to tile a texture itself. In order to tile the texture, the UV map must be set up in a manner that forces it to do so. The easiest way to do this is to enlarge the UVMap in a tool like UVMapper Pro.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)