ok, this might be a little different.
1. find the picture you want.
2. right click on the picture and select properties
3. there should be something that says url, highlight that and copy it
4. then you need to upload it to a website, like here on the dis
5. click on the thing at the top of the page that says Pictures/ Video
6. you might have to log in there
7. after that, click on upload photos
8. there's a thing where it says url code, paste the url code from your picture here
9. then hit submit
10. your picture should appear on a list then click on process files or something like that
11. then go back to the main photo page and your pic should be like the first one on there.
12. click on your pic and it should appear on a different page
13. right click on that pic and select the properties and highlight the url code again and copy it
14. go to your user CP and select edit signature
15. type in
http://www.wdwinfo.com/photopost/images/overlay-roundp.gif or whatever your picture's url is
16. don't forget to put the
17. then your picture should be in you sig.
e.g.