hi, i changed the USB code that made for Keil to GCC and compiled with 
it, the LPCUSB.rar is compiled version with GCC and the other one is 
compiled by Keil, i changed the target.h to use USB but not working yet, 
please someone test my code to get it working, thank you very much.

i think i found the problem, i think i must add the usbram to lpc2378.ld 
but i don't know how and i found this inside the freertos example for 
lpc2368.