I have seen the video on Satyanarayan vrat ( http://www.shreemaa.org/drupal/node/721) but it doesnt give the instruction on how to perform the puja. Is it possible to get the instruction on how to perform the Satyanarayan puja?

Swamiji says: The actual puja is the vow to speak and act in truth.The Vishnu puja in the beginning of the book is sufficient to ratify that sankalpa.Then read the Vrat, the story of other people who observed the vow.