Thanks,
Not only Thick headed but also blind

~~ Dale ~~
Fret not... you're not the first to stumble blindly here...
A hint: choose a prefix for all of your JPEGs that you upload, or else you may find you've chosen a name already in use (which could cause your image to fail to upload).
For example, I generally use the prefix "rot" and the image name following will be the date created, plus a number, if it's part of a series.
this system also makes it much easier to re-post an image ("now what the hell was the name of that funny picture...?").
Another hint: after you upload and you see your list of images displayed, hold Ctrl and click each one once to highlight all of them. Then right click and select "copy", close the list window, and past the image names (now with YaBB code attached) into your message.