He was asking specifically regarding the Spyder headlights, which have fake projectors with plastic lenses, and are made for halogen bulbs only.HIDs are run in projectors all the time straight from the manufacturer.
In this case you just need to make sure you buy the correct HID bulb. D1S bulbs are designed for projector applications, D1R bulbs are used in reflector housings. R bulbs have a coating painted on to them which help the reflector produce a cut off line, S bulbs do not, similar to halogen.