I was told by someone (I can't remember who!) that one should use PC-NF 3.0 in conjunction with 4.0.x. I can't say if this is really the cause of your problems or not. I hope this helps! Brett Chapman G.E. Medical Systems (414) 548-5156 uunet!{steinmetz,crdgw1}!gemed!chapmanB sun!sunbrew!gemed!chapmanB