Brake Incidentals Kit
To cut the cable and housing, you still need cable cutters or dykes. If ya don't gottem now, gettem at a bike shop or hardware store. Make sure you pay at least pay $20, because if you don't, they're bound to be lousy.
Get a fine file, too, to file smooth the end of the housing after you cut it. Hold the file still, rub the housing briskly.