Well, For multiple enchantments you could either use Enchantment Enhanced or Advanced Magecraft, at least these two I know of. Enchantment Enhanced will allow you to stack multiple effects, but in my opinion, it's crap. Therefore, I only really use it for the arrow enchanting and the scroll learning. Advanced Magecraft has loads of functions, however, try to restrain yourself. It's really easy to create really uber stuff with it. Anyway, how you'd do what you want with it: 1. Enchant your armor with your first effect. 2. Enchant another armor with another effect. 3. Transfer the enchantment to your preferred armor. 4. You now have two (or more if you repeat steps 2. and 3.) effects. 5. ??? 6. PROFIT! As to your other question, I don't think I understand it properly, but it seems you want to know why you can use the Resist Fire effect but not the Resist Frost. Trick is, you first need to know the effect. Just buy a spell or something with that effect. If this is not what you wanted to ask, then please clarify.