Removing Zero Line Programmatically

[User (Legacy)]

I seem to be unable to find a property with the axis object to remove the 

zero lines from my chart. I can do it with the property dialog by going to 

the Axes tab, then clicking on Details and then clicking off the zero line. 

Anyone out there know of a way to do this programmatically? I am using VC++, 

but sample code of any sort would be appreciated. 

Thanks 

Bruce Rhoades