Google Earth works great on the Desire, but owing to the problems with the Desire still not fully working with the Market, it’s not available to download as yet.  This problem seemingly is owing to Google not yet updating their databases with the authentication fingerprint for the Desire; talk to HTC and they’ll direct you to Google, talk to Google and you guessed it, they’ll simply not respond.  Not very helpful to be honest and very frustrating to say the least, you’d imagine between the two companies they’d be eager to ensure full functionability to showcase the full potential of what is essentially the flagship Android device here in the UK.  I could understand Google’s slow progress (read: reluctance) if the Desire were directly competing with the Nexus One but of course it isn’t really, they are selling in different markets.

There is of course a way to overcome this, all you’ll need to do is manually install the .apk file onto your Desire, the easiest way to do this is to install it using the HTC Sync software.

The .apk file can be found here (if you are having difficulty I have also put the file into a .ZIP archive here).

Enjoy.