You could also get a photobucket account. www.photobucket.com
you can upload all the pics you want there and use them in here. Below each image you add on photobucket will be 4 link options. Select the last one, IMG Code, by just clicking on the word "IMG code" it will copy the link for you.
Then come here in another window, so you can go back and forth if you have more than one picture to show. When you are done telling us about your FO, and want to add the picture, just paste the copied link into the message... If you have more pictures to add, go back to the other window that has photobucket open, and select the IMG code for the new picture. And come back here and paste it in to the message...
it will look like this when you type it into the text box...
But when you post it to the forum it will show up like this...
hey guys, I just made this really cute Mitten. I used worsted weight yarn, in a pretty red.
If the image is too big the KH forum will automatically resize it for you, and save you the hassle.
You can also use photobucket to make photoalbums online. Easy to share pictures with friends and family over a distance. You just send them a link to the album.
If you need help with this or want some screen caps, feel free to PM me. I hope this is helpful.