The effect of the rotation and finite size of a stellar radiation source on dust particle orbits is examined. It is found that, for dust particles substantially larger than the critical size, the general behavior is to spiral under the effect of the traditional Poynting-Robertson drag. However, when the effect of the source rotation is taken into account, the possibility emerges that grains with near-critical radius form rings in the equatorial plane of a rapidly rotating star. These orbits would be stable in the absence of other perturbations.