All:
Built Win XP Pro from scratch - no usb drivers were available. Windows cannot find them. Did install VMWare tools. Anyone else see this?
What do you count as a "USB drivers" available? Presence of a USB Root Hub or Controller?
you go to device manager and it displays ye olde YELLOW question mark ala Windows that exclaims I don't know how to do that Dave - i.e. I don't have device drivers for this hardware device, etc.
Specific USB drivers aren't in VMware Tools. Try installing Apple's Boot Camp drivers to get USB drivers for Apple's built-in USB devices (iSight, Bluetooth, etc.)