[GRASSLIST:4504] dxf layer transformation

[Kirk R. Wythers]

I could use some advice geocoding a .dxf file. Bellow are the steps I 
have taken thus far:

I have an xy dxf map imported into grass following Neteler and Mitasova 
2004. I brought in the single dxf file with v.in.dxf -a, which created 
approximately 50 ascii files (one for each layer in the original dxf 
file). I then went ahead and converted the ascii layers to grass binary 
files with v.in.ascii -s . Now I need to set ground control points and 
do the transformation. However, it seems terribly repetitive to set 
GCPs for each layer and do individual transformations for each. In 
addition it will be very problematic to find accurate ground control 
points from a rectified raster of the same area due to the fact that 
the features displayed in some of the vector layers don't show up well 
in the raster.

Is there some way way to group the vector layers together and transform 
them all at once? This would allow me to chose the layer with features 
that would for good ground control points.

Kirk