I need a spiral!!!

Everybody has seen it. It was everywhere a few years back. You know, the black and white hypnotic spiral. Well, I need one for one of my videos. But:

1- i can't seem to generate a nice one with my programming.
2- I really can't draw. But I mean really!
3- I couldn't find one anywhere.

I've been looking everywhere. Bookstore, internet. I've even been to a doctor that uses one of those spirals, but they don't give the effect I want. So in clear, here is what I need.

I need a spiral that start at the outside and shrink in COUNTER CLOCKWISE. This is very important. Also, I need the center branches of the spiral to be thinner than the outside branches. the black and white (or whatever, color is not important) branch of the spiral must be THE SAME WIDTH. When rotated CLICKWISE, you MUST have a weird feeling of "going in" and not "goint out" of the spiral.

at: http://pages.infinit.net/tlc/image/spiral.gif is one which I made a few days ago, but it's no good because:

The size of the blue and red branches don't shrink as they get to the center

There is too much staircasing on the pixels (needs antialiasing)

Does not provide with the sensation of going in, not really anyway.

To sum this up:

the image must be circular, and not be an ellipse. It must be a perfect round.

There must be only 2 branches. and they must be of same width.

They must start at the outside and go in COUNTER CLOCKWISE, so that when rotated CLOCKWISE they provide a "going in" feeling.

The branches of the spiral must start BIG at the ouside and get SMALL at the inside.

I would LOVE to know of a Plugin for photoshop that would be a spiral maker.

Since this is not Dreamland, I will accept images in any format.

I don't have much points left, and I will give them all to whomever can find me what I need.

Thanks!