Thanks jsprogg, I've got things happening now... but more problems. I've started to join some of the curves, and they're not smoothing right...

When I run the cleanup command (set to select and not delete) loads of the new faces I've created are highlighted as face with zero geometry area - but I've checked for rogue verts and faces but can't find any.

I'll keep plugging away and post later if I can sort this out.

thanks again,

gubar