First of all - thanks to everybody for responding.
I solved the problem in Xara X - all I had to do to get the mould tool to work was to convert everything to editable shapes.
I downloaded Blender and kinda caught my ears in it - I'll have to get a 3 button mouse for it [img]/infopop/emoticons/icon_biggrin.gif[/img]. Strata will be checked out this weekend.

Live healthy, exercise more, still die.