an items questioon

anyone know if you can make it so that equipping a certain item can modify another item? i was thinking of doing this: A player has the bow, he then buys an item called poison arrows, he has to equip it, and when he does, the bow goes from a regular bow, to a poison arrows bow. I know that you'd probably have to replace the weapon, but it might get complicated with all the changing graphics and items, etc.

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Im pretty sure you have to replace the weapon(and do all the complicated stuff). You just might be able to not have to, but I think you do. Check in PoG to see how they did the sheild w/dragon teeth. If they replaced it, I guess you would have to, too. But keep looking for answers, because there might be a way. Hope I helped, ~Chrios