Has anyone ever tried to read the USB Specification?

[rous]

It's absolutely awful, but the Apple Documents insist on pointing me towards them--"For further information, consult the Universial Serial Bus Specification blah, blah." Anyway, I'm trying to fool this application into believing a generic USB device is actually a dongle. To do this, I need to isolate and replace the dongles device descriptors (as well as some other stuff) with the matching descriptors from my generic device. I have found the dongles vendorID, productID, IOUSBDeviceUserClientTypeID, and IOUSBDeviceInterfaceID, however there is one additional index, which I can't figure out...any ideas?

rous

PS-I know I have not explained this well, however, I'm in a hurry right now...I'll write a better one when I return later today.