GARMIN XT navigation software for Windows Mobile and Symbian have very useful function, that parse incoming SMS messages.
First version sample (easy way) send SMS with this text:

<PeerPoint>Description<C>N 49.00000 E013.00000
<G>20100001

And if cell phone detect this pseudo XML, then asks for start of Garmin XT main application and shows GO! button. You can easily copy&paste this text and replace location in WGS84 format from Google Maps or any other map source.

Official PDF document from GARMIN corporation