If you attach the least fuel efficient rocket to a fuel tank, and attach that to the command pod and launch, you can leave the planet's gravitational pull entirely.
http://i1181.photobucket.com/albums/x434/monsterseebs/KSP2011-07-1416-09-18-93.jpg http://i1181.photobucket.com/albums/x434/monsterseebs/KSP2011-07-1416-09-25-77.jpg http://i1181.photobucket.com/albums/x434/monsterseebs/KSP2011-07-1416-09-32-94.jpg A bit over powered?