in case the search didnt work out for you, i'll let you know that you'll need your oem pair of lights to start w/. if you plan on taking a while for the retrofit to be done, you'll need a backup pair or you wont be driving around for some time.

next you'll need a set of projectors. these can be taken from a tsx, benz, audi, evo, or whatever. different projectors will give different hues or flickers of light. for example, in my retros i have the tsx projectors. they create a pure white light that flickers light blue/violet at certain angles. pure beauty, in my opinion. find these on ebay, sold w/ or w/o the rest of the headlight for about $150-$300. anything above is not worth it. :P

you'll need some ballasts/ignitors. good brands are like hella and matsushita. i have a pair of of hella gen 3 ballasts. ballasts should go for about $100-200 a pair, depending on how well you can find the parts.

then you'll need some HID bulbs. ive gone w/ philips. not sure if this is true, but i dont think bulbs determine the color of the light output. you can get these for about $50-75 a pair.

after you got the parts, you just retrofit all that mess together and install them, which can also be a pain if you have no idea what youre doing. Green1999Accord did my retros for my '04 accord coupe and theyre freakin sweet. >:] let me know if you want pics.

hope that helped. so together, if youre plannin on doin the work yourself, the price will range anywhere from $300 (you'll be extRemely lucky if you can do them for that low) to $600.