I found the LG BL40 Chocolate USB driver on lge.com. It allows you to Connect your phone to PC or laptop with the USB cable. I am running Win7x64 and the x86 Vista drivers installed without a problem. LG-Chocolate info
If you are looking for usb driver for your LG BL40 Chocolate, you may try the following download link. Hope it helps.
LG LG BL40 Chocolate Usb Driver Download:
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