create an installer dmg of a program

Open the PackageMaker program.
Click "Assist me..."
Add the files you want to install and give them a destination on the destination drive.
Select files appropriate for a Welcome page, README, license, and conclusion.
Add a bg image if so desired.

Save and move to the directory in a terminal then

$hdiutil create Subversion-1.4.3 -srcFolder ~/projects/Subversion-1.4.3.mpkg

viola!