There are two routes you can go, one is to put shims under the bindings, that is much cheaper of a route to go, also much quicker. The downside to that, is you only will have the shims on 1 pair of skis.
The other route you can go is to get your boot soles canted. First you would grind the soles of the boot to the required degrees, then you fit on new heel and toes plates, then you must regrind the noches that lock into the bindings on both the toe and heel, so that they conform to industry and binding standards. Going about this route will allow you to ski any ski with your cants.
At my shop its about $70 to get your skis shimmed, and about $225 to get both boots canted.