I don't have a pic handy and my wife has the car so I can't take one.
Here's a description on how to find that thing:
Stand in front of your car looking at the engine. Put one hand on the top of the engine and lean WAY back to the back of the engine and look straight down. There is a bunch of tubes and wire clusters that go through back there. Using your right hand reach down under the right side of the engine and squeeze your arm down and push those hoses towards the front of the engine. Right below those tubes is the speed sensor... which is actually a distance sensor.
It is not easy to reach at all (I got all kinds of little scrapes on my arm from screws and such as I was getting my hand down there to get it out.
The only place in the US I could find a new one (I didn't get many responses for used ones and I don't recommend getting a used one anyway) was from www.DaewooUS.com. Here is the part information:
*Part No.(Description) --- Unit Price * Qty = Ext. Price
------------------------------------------------------------
*96190708(SENSOR A-DISTANCE) --- $20.76 * 1 = $20.76
***WARNING***
Unless you want to go through what I had to go through, be very careful when you remove it.
Pull it straight out and check to make sure the small gear (which is made of plastic) is still connected to the distance sensor. If it is not... you need to be VERY VERY careful when removing it. Mine was sheered off from it jamming and the gears of the transmission twisted it right off the end of the sensor. I reached down into the hole with a pair of needle nose pliers and grabbed ahold of the little gear which was resting down inside the hole. When it was 3/4 the way out of the hole, the pliers slipped and the little gear fell back down, but didn't stop there. The right side of the hole is open to the transmission. The little gear fell completely inside the transmission and down to the bottom. From there I had to remove the transmission pan (whatever that's called) and in the process let all the transmission fluid out. In the bottom of the pan was of course, the little plastic gear... very annoying.
If you end up having to remove that gear from your transmission, be careful not to damage the gasket as you remove the pan. Otherwise you might end up having to buy one of those too. If you don't have a second car, make sure you have two quarts of SAE 80W - GL-4 rated gearbox oil. You might need to call around as GL-5 is the more common type these days. That way if you do drop the gear, you can do all the things I mentioned above and then re-fill the transmission with fluid before you try driving it anywhere. And don't drive it if the gear is stuck down there... you need to get it out first.
They call it a Distance Sensor because it actually measures the distance the gear travels and the rate at which it is traveling... giving you both speed and odometer information. I assume you could also get tach information from the same unit, but since I don't have a tach and haven't installed a new cluster, I don't really know if that's entirely true.
Here is a picture of what mine looked like when I took it out:


Notice how it's twisted right off the end...
I still have the little gear that fell in, but I don't feel like taking a picture of it at the moment.

If you have any other questions, let me know and I'll do my best to help.