I'm sorry to hear about your headlights. i don't think the stealership will do anything about it. i cracked my headlights as well back in may. I bought mine off of ebay for about $152 [for one side]. Afterwards [you may already know this], you just gotta take off the front bumper, and unhook all the wiring and remove the bulbs/ballasts from the cracked headlight onto the new one. be careful about touching the bulbs!
oh. here's a link to something similar:
2006 2007 2008 Acura TSX Headlight Head Lamp Pair Set:eBay Motors (item 130332990733 end time Oct-23-09 14:02:57 PDT)
the pricing on that is about $360, though. i hope this helped