I didn't use plastic or aluminum.I have a handheld electric mixer. I can get them frothy. And i can get them fluffy. But I couldn't get them to be rigid with the peaks. 
Are you sure you're beating the whites?

Well, since I'm not there, I can only guess what the problem(s) might be...
-Are the beaters on your mixer spotlessly clean? It's very easy for stuff to remain in the beaters especially by the center post.
-Is your bowl clean? I always wash and dry my bowl before beating egg whites even if it is "clean".
-Egg whites should at least get a little frothy - they can get frothy by just being beaten with a fork. Are your eggs fresh?
-How many egg whites are you beating up? Sometimes you have to position the bowl so that they get continuous contact with the beaters if you're only dealing with one or two.
-You could just need to beat them for a longer time.
-OH! What time of beaters are on your mixer? The "old style" with the flat "wire" - like the width of a twist-tie closure - or the new-fangled ones that are more like thick wires? It's does take a while with the old style beaters.
-If you are adding sugar, it should not be added until the egg whites are halfway there.
-You said you did get them fluffy. You're "fluffy" may have already been soft peaks. If you kept beating them until some water started to appear in the bottom of your bowl, then that means you've overbeat them.
Here's the link for the Food TV tutorial online:
http://www.foodnetwork.com/food/ck_dm_dairy/article/0,,FOOD_18998_1729015,00.htmlWhat exactly are you trying to make?