if you HAVE to change your headlights, go with the TYC brand. Those are quality constructed and come with everything you need in the box.
When swapping to projectors, the TYC kit requires a bunch of bulb size conversions. You might go from a 9006 to an H3. The TYC kit looks good, but people have been pretty pissy about the light output on them.
If you do a plug and play HID + TYC job, you'll have great results.
If you don't want to deal with it ... these are pretty good looking too.
http://cgi.ebay.com/ebaymotors/DEPO-...70460369QQrdZ1
they might fit funny and not to OE spec, but they look GREAT.