puny ps2 would explode if it tried to load Oblivion.
The armorer skill has nothing to do with enchanting, that I know of. All you have to do is get to the Arcane University, go to the chironasium, activate the altar of enchanting, add an item and a soul gem, select one of the spells (you can only learn spells that you've learned already), and voila' you've got a new cool toy.
I also am an expert alchemist and love to whip up some really nasty potions to poison my arrows and blades with. If I can get far enough away and still hit the enemy with an arrow, I can snipe someone with a poisoned arrow from an enchanted bow then slip back into the shadows. After their health has gone down enough that they won't be a huge difficulty, I step in and hack away.
I also created a spell that does 80 Frost damage to everything within 10 ft of target. It uses nearly all of my magicka, but it can really do some damage to a group of baddies. Besides, it looks cool.