this is in lite-C, but it shouldn't be too much different from C-script.
Code:

---

#include <acknex.h>
#include <default.c>

BMAP* image1 = "image1.bmp";

VIEW* secondView =
{
	layer = -1;
	flags = NOSHADER | VISIBLE | NOFLAG1;
	size_x = 1280;
	size_y = 800;
}

MATERIAL* ballMat =
{
	skin1 = image1;
	effect = "screenFX.fx";
}

action ballAct()
{
	my.material = ballMat;
	secondView.bmap = image1;
	my.flags = FLAG1 | TRANSLUCENT;
}

void main()
{
	video_set(1280,800,32,1);
	level_load("street.mdl");
	wait(3);
	ent_create("ball.mdl",vector(0,0,30),ballAct);
	vec_set(camera.x,vector(-200,0,30));
	vec_set(camera.pan,vector(0,0,0));
	camera.aspect = 1.2;
	secondView.aspect = 1.2;
	while(1)
	{
		camera_move();
		vec_set(secondView.x,camera.x);
		vec_set(secondView.pan,camera.pan);
		wait(1);
	}
}

---

just some notes:
-- "screenFX.fx" is just exactly what i posted earlier;
-- since i use a widescreen, the aspects need to be set to 1.2 to get the right aspect ratio. this wouldn't work properly when i set secondView.aspect = 1.2 in the view's declaration. i could only get it to work when i set secondView.aspect = 1.2 after camera.aspect = 1.2;
-- ballAct() is just the ball's action that you see in the screenshot from my last post;
-- most of the main() function wouldn't matter to you because it's just setting up my test level.

i guess the main difference i can see is that i don't use an event to assign the material skin -- it's just in the material declaration.

um... sorry i can't be of much help with this. i'm going to be playing around with this a lot in a couple of weeks when my exams are over. i hope what i have for now helps!

julz