And what exactly does this have to do with OFP modelling...
OFPEC is about OFP editing, not tech Qs about software you can possibly use to model a model you can then import into a tool used in OFP modelling...
Quite a long de-tour, isn't it..
In cases like these I think Autodesk forums (or something like that) and Google are your friends..
#LOCKEDEDIT:
Well, after thinking about this, my keychain was maybe a bit too hastily used
So, un-locking but please do not stray any more off-topic