Police yesterday seized a small cache of weapons and ammo from the Totowa, NJ, home of troubled Giants star Plaxico Burress, possibly setting up the suspended grid star for more legal trouble, law-enforcement sources said. If the guns are unlicensed, the embattled wide receiver could face additional charges. Seized in the raid were one 9 mm handgun, a rifle and ammo for three additional guns - a .380, a .45 and a .40, which is the caliber of gun with which he accidentally shot himself in the leg.