GC3D 2.0 
by Einhfos

available at RallyOnline
http://www.sportplanet.com/cmr2

[A B O U T]

The second version of GC3D now allows you to unpack and re-pack modified C3D car objects from Colin McRae Rally 2.0

[P R O G R A M   N O T E S]

-It is only possible to modify cars. The number of vertex and the relationship among them cannot be modified. This is a must because the vertex of the cars are connected with the textures:

  coord.polygon(vx1, vy1, vz1)<--->coord.texture(x1, y1),
               (vx2, vy2, vz2)<---> (x2, y2)...

Any modification in the number of vertex implies new connections with the textures and will pose a problem.

-The objects that form a car must be separated at the time of packing the modifications.

-At the moment, only MilkShape3D DXF format is supported when re-packing the modifications.

[I N S T R U C T I O N S]

From a command/dos prompt:

Usage:    gc3d -d <archive_source> [<directory_target>]
          gc3d -c <directory_source> <archive_target>

Examples: gc3d -d suba1N
          gc3d -c suba1N_dxf suba1N

Options:
   c: Packs modifications and compress archive
   d: Decompress archive and unpacks objects
   h: Give this help

NOTE: Option 'c' only work with objects in MilkShape3D DXF format.

You can obtain a trial version or purchase MilkShape3D from 
http://www.swissquake.ch/chumbalum-soft/