How to give the input of the graphfile in hmetis

I want to partition the hypergraph. I don't know how to use hmetis. I read the manual but i am unable to give input for the graph file. i have the hypergraph in word format. as i use command prompt D:\> DIR ----- hmetis.exe ----- the format for inputs will open. after that i know all the other except the input of the graph file. if i give the name of the hypergraph (stored in D:\> DIR ) suddenly the word document opens.this is my problem sir. help me.i want to know about the input of the graph file & the hyper graph file must be in what format.