Can't load z3ta+2 into my host of Synapse Orion v7.62 via windows XP

Hi  I've tried but can't load it in, the auto install the synth has doesn't go into my comp, it goes through the motions and finishes but doesn't show in my vst list in Orion.  Anyone now wot I can do please.  Thanx in advance  Rm ---- http://soundcloud.com/blu-inc