Ap for syncing iphone map ap with laptop map?

[SmallTownUSA]

Hi All:
Am looking for an ap that will allow me to sync/edit a map generated on my laptop (like google maps or mapquest) which I can then see/edit on my iphone. I have tried doing this with google maps, bing maps, and mapquest. They will allow it. I have installed MotionX GPS and MotionX GPS Drive but they will not allow me to send/create/sync a map with my laptop. Any suggestions?