making lpc2478 board to recognize a usb keyboard

Hi all, I made a custom board using lpc2478 and made my pendrive to detect by using usbhostlite. Now I want to do something like this, if i plug a usb keyboard or mouse it should be detected by my lpc2478 board. If I am not wrong, my lpc2478 usb should act as host for this. I ve been browsing the keil forums and examples and discussions were given for recognizing the board as hid on pc.Is there any reference project or example available for recognizing the keyboard by a lpc2478 board.? If not, can you give some pointers for doing the programming?Thank you.