h shyam
you can create a co-co bogie textures in the place of bo-bo in tat way it would sort things out.On the other hand if you want to a 3d model of co-co bogies you can do it and if you are really familiar with 3d modelling you can do it in gmax or 3ds max in this case you can create a box with necessary dimesnions then create a 512*512 or 256*256 transparent tga texture convert it into ace file and then apply the transparent texture into your model.These are the 2 best methods to create the co-co bogies in msts.
thanks

hi vikrant can u tell me where can i get the tutorial of making a co-co set of wheel and how to add it to the engine or replacing the bo-bo with co-co.

1 more information i need vikrant from where u downloaded gmax for train simulator

do you want me to teach you 3d modelling and then how to start your own website on indian railways,come on this forum is meant for the website and not meant as a help line.Please ask your queries based on the downloads and updates of the site and about the forthcoming releases and regarding tutorials dontcha worry im startin that section very soon,in that you can await some fantastic tutorials on indian railways and 3d loco modelling and you can get gmax from www.discreet.com.
thanks