Is this picture on the internet, an email or to your computer?
1-If it is on the internet and there is no 'copy image location/address' then you need to right click on the image and go to the bottom option which will be 'properties' that should then bring up another small window with all of that images properties, and down the righthand column there will be the images direct link (i don't know what it will be called as i haven't used a windows computer in a long time, but it will start with 'http://' once you have copied that then insert it into the [*img*]*paste image link here*[*/img*] code and it will be viewable
2- If the image is saved to your computer then you will have to set up your own photobucket account at
www.photobucket.com - Its easy to set up and allows you to upload your photos securely to a free image host. Once uploaded photobucket will automatically generate the link to publish the image, just copy and paste the 'IMG code' link into a DP page and you're good to go.
3- If the image is saved in an email then you must either save it to your computer and go through the 2nd option, or you can email the photo to photobucket and it will add automatically, just forward the image by itself to the email address that Photobucket will supply you with, once uploaded continue with step two