looking now

*edit:

i think the problem is with your UVs, they are overlaping, and they are not layed properly in 1-1 uv space.
its not a problem to have multiple meshfor a game character, but if you are normal mapping its usually a better idea to have a continuous mesh.
so u need to shrink your uv's for the low rez and make all the peices fit all in the same uv grid. even if they are not combined as one polygons, u can select multiple uv maps from multiple objects in maya.
as for the normal map not appearing, if your video card is not good enoug to display normal maps in the viewport it will not. i cannot display them on my quadro 750; thats a pretty old card.

another thing, for making normal maps, i use normal mapper from ati and melody. melody is very user friendly with a nice UI. and they are both free.