Crap. Computers suck!
Uh huh.
I'll host it for you. Just copy and paste the following line into your LJ where you want the image to appear.
<img src="http://www.cse.dmu.ac.uk/~c99ke/ts002114.jpg">
Usually you don't have to get somebody to host it you can just add a link straight to where it came from. In future if you need an image that is already online somewhere then do this. (assuming you are using Windows and Internet Explorer)
1. Right click on the image you want
2. Select "properties"
3. Hightlight everything in the Address (URL) field.
4. Right click on the highlighted and select "copy"
5. paste the stuff you just copied in between the quotes of the folliwng line in your JL
<img src="">
That's it
Hope it helps
-Kev