Google Earth Web Plug In

Hey,

just seen that Maps, by Google, is offering an 'Earth View'

I downloaded the plug in but am having trouble installing it.

I have the .dmg file which when i open shows me the plug in as a sort of Lego brick and states I must double click to install.

So i double click. Nothing appears to happen, but i assume it has and go back to Google Maps which tells me i still need the plug in!

Please tell me how to manually install plug ins or what could be wrong with my poor mac!

regards,

eales