[OpenLayers-Users] vector layer visibility or z-order with image layer

[MilesTogoe]

I'm now working with svn trunk as it seems to fix some previous issues 
and my image layer is now correctly bounded, projected with long/lat  - 
however, if I have an image layer and add a vector layer, the vector 
features are not showing and the vector layer is "grayed" out in the 
layer switcher.  If the layers are added as such:
map.addLayers([graphic,vlayer]); 
the vector layer should be on top, correct ?  Does some visibility 
switch need to be set ?  Any ideas ?