ArcMobile feature class and basemap Spatial reference conflict

[martywalters]

is there a step by step example for creating a simple feature class and offline basemap for ArcMobile  that doesn't use ArcServer and doesn't use ArcSDE?  I can't seem to get the spatial references correct. 

all the examples of building offline basemaps use  "WGS 1984 Web Mercator"

but when i use that Coordinate System for the data (point feature classes) the data doesn't return from the mobile device with the correct latitude and longitude

[martywalters · Accepted solution]

use what I've got... just use 

ArcObject CoordinateTransformation to convert!!!