Kansas City, MO
There was/is a post here with the drivers for mac and pc... but for some reason it never downloads for most people (not sure why it appears it's to large for DSLreports I guess).
One trick you can try is to place the MC760 into another machine that has never had it installed.... then when the virtual CD pops up you can copy the software from that virtual cd onto a usb drive... then install the software onto the machine you need it on from that usb drive.
Here is the original thread with the software if you want to try that route:
»Re: Virgin Mobile USB Install Error, Help Anyone?