[GRASS5] exporting 3d vectors from grass5.1

[Jaro Hofierka]

Hi,

Recently I was successful in importing 3d shapefiles to grass5.1 using 
the quick fix for r.in.ogr sent by Radim. Now I have a similar problem - 
I'd like to export grass 3d vector files to 3d shapes. I tried 
v.out.ogr. It looks like everything's OK but ArcView does not recognize 
the file as a 3d shape. Maybe r.out.ogr also needs a similar fix.
Also, I had a problem converting 3d vector to raster using v.to.rast. 
This module expects a "column" with an attribute, however, I just need 
to use a z coordinate from 3d vector. I could not find a module which 
can convert 3d vector to a 2d with elevation changed to attribute.
Thanks for any help.

Jaro