Ok, Seems that some of my problems are caused by my tire sizes. I knew that the tyres had to be the same size front and rear, but my importer assured me that this was ok with the rim and tyre combination he sold me. (Bastard)
ICE put same profile tyres on front and back which has stopped my movement in the rear when I take corners hard. The HICAS light is still on, so they are inverstigating furthur.
My AIR BAG light and ABS light haven't come on for about two weeks after I found a dodgey earth in the engine bay. Thanks heaps to who ever posted that Idea.
Will post more when ICE get back to me.