How are GMO's made?

In order to make a genetically modified organism there are three main fundamental components needed to make a GMO. These components are the gene you want to transfer, the organism in which the gene will be inserted to, and a vector that will serve as a car that will drive the gene into the targeted cells.

In this diagram you can observe the exact process of how GMO's are made.
http://www.odec.ca/projects/2003/britt3m/public_html/makinggmo.htm