I purchased an 09 Accord EX-L V6 without the nav system, and now that I have a bluethooth-capable cell phone (G1), I would like to be able to use it with the accord. Is there a module or something I can buy that will allow me to use my cellphone with the Accord's built-in sound system? I am comfortable modifying the car as necessary to install the device. Can you recommend specific products from Honda or other parties to make this happen?

Thanks!

look into Parrot bluetooth kits...seems to be the favorite and most reputable

look into Parrot bluetooth kits...seems to be the favorite and most reputable

Do these devices interface with the Accord non-nav sound system? I would like to have the accord's sound system work with the bluetooth so, for instance, music would mute if a call came in on my cell phone.

They're a bit pricey, but Honda does sell a BT kit. Look at the one on College Hills. They show install instructions too.
http://www.collegehillshonda.com/honda_accord_2dr_accessories/08_09_accord_electronics.htm