Two USB questions

I got a lots of USB questions, but first just two ;-). Please guide me to the right web sites ;-) 1. Is it possible to boot from USB? If so, boot rom from an Ethernet card can be also a floppy, ... can we make it as an USB memory stick ??? 2. I need the USB port from a remote machine mapped to my machine. E.g., machine A, the server would like to use the USB port of the client (memory stick, audio, video, keyboard) bye Ronald