Manipulating 3D mesh

[careyc]

I'm a newbie to all of this, so I hope there's a simple way of doing what I need.

I have a 3D model saved in 3DS format. I imported it to AC3D 6.0 to try and manipulate the structure and texture. I can't select individual vertices or surfaces to move. The mesh seems to be fixed and unable to be altered. Is there something I'm missing?

Thanks in advance!