Copy it onto a cd.
In G5 hut the button in the utmost rightupper corner of the G5 keyboard.
The cdtray will open. Press again to close. Doubleclick the cd and doubleclick the .dmg and then when u would see a white icon looking like a drive, doubleclick on it and u'll see a screen with the applicationsicon, tutorials readme's etc.
Click on the findericon in the dock* and click there on applications to see the applicationsfolder.
Drag the adobe icon readme's etc. into the applicationsfolder and another screen might pop up to ask "identity.,..or cancel".
Click on identity..,fill in his name or 'root' and ask him to fill in the password belonging to his name or root.
Then the program is in the app. folder.
U could drag the adobe icon out the folder onto the desktop as a shortcut or into the dock *(that glossy bar belowscreen with the fancy bouncing icons).