Blender mesh with skeleton

Simple task for blender expert. I need to change "Sinbad" mesh by "Boy" mesh (both attached). I need to keep exact simbad skeleton position and size. This is going to be included on a "ogre3d" game, so it's very important the skeleton and proportions are the same, only changing the character. To be sure it works, please export it to "ogre mesh" and test it on "Ogre Meshy". When exported, only one mesh should be generated (as in sinbad). Please make sure only colors are used (no external file for textures). I will accept the job completed only when tested on my game.