Don't waste your money on new lamps, the old ones will clean up just fine, and as good as new.
If you don't want to try, plenty of mobile places on Craigs List that will charge you about $50 to do it.
You could buy pretty much buy the buffer and supplies for $50 and then you have a buffer in the garage!
I had the buffer already, I bought it in the sale, PLUS I used a 20% off coupon from a Car Magazine... like CarCraft or Hotrod, so I paid like $38.
This is how I did my own...
P800 on a block wetted.
Looks like this after, so dont freak out:
Then P1500 on a block wet:
Looks like this after:
Then smear some metal polish on...
I used Autosol..
Buff with my HF buffer, and foam pad:
Looked like this after:
If you really want to work it, you can fine buff with a wool pad, and a super fine plastic polish like this one...