I still use FS02 because my comp is 4 years old. Both of these are designed for FS04 but work fine in FS02 (personally tested).
Flips here
http://www.simviation.com/fs2004utilities6.htm
FLIPS converts a flight plan (.pln) file to a GoogleEarth .kml file. See your flight plan and waypoints in GE.
MyFsGoogleEarth lets you fly while viewing real time GE terrain. I haven't tried running them on the same computer simultaneously but it works great if you have 2 networked boxes (which requires WideFS).



