Open the program and insert the picture using the menus. In OpenOffice you go to
Insert | Picture > From file.

Or open the folder with the picture in it and right-click on it. Choose Copy
from the drop down menu and go into OpenOffice and go to where you want the
picture and go to Edit| Paste (or Ctrl-V). If you want more control over it so
the text flows around it make a Frame first by going to Insert | Frame.