I followed Brian's instructions on installing PathPilot on my Pulsar. I installed PP on a new SSD using an old motherboard I already had. The MESA card you need depends on the motherboard in your control panel. I used an empty PCI slot in the old mother board with the 5i25 MESA Card. I think if you use a newer MB you may need the 7i25 MESA card. The complete changeover took an hour or two.
See this thread for Brian's instructions.
Steve