Hello Everyone
I need to know the same.
I’m already have a pic 18f series controller,but i have no clue on USB programming.
I need to transfer data from controller to pc (and vice versa) ,using hyperterminal.
Using rs232 protocol,its a piece of cake,but i cannot say the same for USB.
Is there any sample program i can follow?
Thanks in advance 
Edit:
If possible i prefer the code to be in c,in which i am very comfertable.
I have a freescale k60 series controller which already has a usb module in built,which finally i would like to implement data transfer to pc from usb.
The pic controller is just for testing purpose.