Yes, I was talking about the converter from Kim Jensen.
I did not know that it had artifact problems. If you are on support, I think Softimage has a standalone on the support web page that goes straight from Zpic to Softimage pic. I assume that since it was written by Softimage that this one will not have any of the artifact problems that you are talking about.
If you can't get that stand alone and you only need a few files converted, send them to me and I'll do it for you.
Ed Harriss, http://www.EdHarriss.com
New Video! "SoftimageXSI: Mastering Materials"
Now Shipping - see Examples at EdHarriss.com