Should I use an existing usb driver or should I create my own?

We are developing a custom piece of hardware that uses a TI6250 chip to provide an USB communication channel. I read through the web reference http://zone.ni.com/devzone/conceptd.nsf/webmain/6792BAB18242082786256DD7006B6416?opendocument that seems to imply that I don't want to use any existing drivers but I need to create my own using the wizard.
I'm new to USB so I'm trying to get started off right so any advice for a novice would be appreciated.
Thanks,
Brad

What the wizard creates is a .inf file that contains manufacturer id, model number, etc. that defines the USB device that you want to talk to. On your custom board, you have to implement these settings in eeprom/flash. The TI chip driver tells your board pnly how to manage USB communication. You would also need to implement a means to interpret commands received into the hardware functions that are on your board. For example, if the text "RST" is received, intrepret that as a reset and set board level registers to do that. The LabVIEW driver would include a Reset VI. This VI would do a VISA Write with the text "RST". So what we're talking about is actually several different levels of drivers and code - VISA, the .inf file, the embedded code on your custom board, and LabVIEW VIs.

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