How do you aim them?, for example I know how to intall the HID ballast and stuff but for the aiming of the bulb If I just remove the stock bulbs and put HID kit without taking off the Headlight assembly and install the new lamps will it be OK?. just like changing the Headlight bulbs to another one.

Just to be sure, "Its Legal no matter what temprature or color you put"

There are like so many of them on Ebay form $50 to $350, any recomendations on which one shoud I buy. I have a 7th Gen Accord Coupe.