Here is an old post from DAZ3D on how to make eyes glow:
http://artzone.daz3d.com/wiki/doku.php/pub/tutorials/poser/poser-maps08

Although it is based on an earlier Poser version, the principle is the same.  I believe there is an article at RDNA which addresses glowing material and capture-nodes on adjacent material.  I don't have the link, but I think it is worthwhile reading.