Brake Incidentals Kit
To cut the cable and housing, you still need cable cutters or dykes. If ya don't gottem now, gettem at bike shop or hardware store. Make sure you 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.