How to create bill of materials for sub assembly in Pro Engineer?

i need sub assembly bom in proe and need the table format too.... need difference between recursive and flat definition.
3 Answer

thanks for the reply.... but already i've tat files i need bom preparation at least for 3 sub-levels

See the following link:
http://learningexchange.ptc.com/tutorial/773/how-to-create-export-a-bill-of-materials