You probably need a LG USB Driver for the env2, you can download it from this link and then install it on your PC:
http://www.gyver.com/drivers/env2usb.zipTransfering ringtones by bluetooth, it works for some and for some it doesn't. Not sure why, It didn't work for me it just went to the My Sounds folder.
Using a computer, I recommend to transfer using BitPim, you can use a USB cable or if you have bluetooth connection with your computer.