A strategic alliance has been established between Spanish partners to develop a 5 kW diesel fuel processor for an integrated operation with a PEMFC. Oxidative Steam Reforming followed by a novel WGS reactor in one step and a PROX delivers a stream with a maximum CO of 20 ppm, able to feed PEM without poisoning the anodes. Paper presents a detailed description of the work carried out to obtain novel catalyst (main section of this paper), design of the reformer and preliminary operational results. Data concerning how catalysts were prepared and catalytic activity measurements for OSR, WGS and PROX is presented as well design of test bench and control. From an experimental point of view some results, at laboratory scale, are presented concerning OSR, WGS and PROX and as well preliminary results concerning global operation of the prototype. (C) 2006 Elsevier B.V. All rights reserved.