Configuring a Virtex-5 FPGA over USB?
If I understand what you are asking for, then no. what you are asking for does not exist. Also, your answer above makes no sense. Xilinx' "XPS USB 2.0 EHCI Host Controller" is a piece of IP for connecting USB to your embedded design. That doesn't appear (to me, at least) to be what you are looking for.