how to colletc idoc into one file then send to XI?

hi all

how to collect idocs into one file then send to XI without using BPM.

I have refer to the blog :/people/stefan.grube/blog/2006/09/18/collecting-idocs-without-using-bpm,

my question is if i config the receive port as the IDOC_FILE, how to send data to XI. before ,i have configured the receive port with XI.

regards

Monson