How to install a .pkg download.
Pkg files such as let's say for arguments sake xampp-macosx-0.5.pkg are installed onto Mac OS X Tiger as follows:
1. Double click on the .pkg file (in this example the file name is xampp-macosx-0.5.pkg).
2. A message that say's something like "Welcome to the Mac OS X Installation Program. You will be guided through the steps necessary to install this software." will appear. Click on 'Continue'.
3. A Select a Destination message will appear. By default 'Machintosh HD' should be selected. If you want to install on another volume other options should be offered here. Click on 'install'.
4. Installer needs authentication for programs to be installed. Enter your username and password and click on 'OK'.
A 'The software was successfully installed' message should now appear.
5. To find the software that has been installed Open Finder (click on the first icon on the Dock)
6. Click on the Applications to open the Applications folder. A folder containing the program that has been installed should now appear.
