Open the terminal on Mint PPC

Copy and paste those lines, and press enter. One line at a time(and then intro). If a command ask your password, type in and then press intro.
###begin command list####
sudo apt-get update 

sudo apt-get install marble git  --no-install-recommends

mkdir -p $HOME/.local/share/marble/maps/earth/

cd $HOME/.local/share/marble/maps/earth/

git clone git://gitorious.org/marble-restricted-maps/googlemaps.git

git clone git://gitorious.org/marble-restricted-maps/googlesat.git

git clone git://gitorious.org/marble-restricted-maps/virtualearth.git

####end command list####
Then open Marble, you'll have it on the menu.

Go to Map View-> Projection - Globe-> Earth, and choose Google Satellite, Maps or whatever map you like.

STREET VIEW (G4 CPU RECOMMENDED)

#### begin command list ####

sudo apt-get install surf

#### end command list ###

Open surf (alt+f2 on Mint PPC, then type surf, and press intro )

Press Ctrl-g, and enter www.instantstreetview.com . 

Why Surf web browser instead of Firefox? Because is fast and tiny , and those old machines haven't got a powerful CPU 

Enjoy Street View without the Adobe Plugin.