headlights

Hey All, I bought an '02 Aurora that came with an aftermarket HID headlight kit. Recently one of the bulbs burned out and I want to replace it. Do I need to buy a whole new kit, or can I simply replace the bulb? I don't know much about HID kits, and a quick internet search was fruitless in...

i got a 01 alero and was wondering if there is a possible way to keep my low beams on when i turn on the high beams so all four would be on when i got the highs on and but when i just switch back to low beams just the low beams would be on,.. cuase i would like all four low/highs on when im on...