[Whitey]

Fabric or more commonly known as Geotextile (Woven & Non-woven) can be had at pipe supply and concrete specialty supply houses. If your driveway sub-base is pumping it is always good to remove the poor base and choke it with a larger stone. If that will not work or if you are on bottomless poor material make sure you use a stabilization fabric or a Woven Geotextile. There are two types of common fabrics on sites, filtration and stabilization one should not be used for the other. Try searching on-line and trace to a supplier near you.