Ok then! Hopefully I won't highjack the thread too terribly!
You can use a different website to copy and paste links of photos, OR you can use the photo sharing feature on this forum.
If you want to use the photo feature here, click 'Uploads' located at the top of the page in the blue bar, it should pop up another page.
Then you should see a browse button. Click that and locate the file your photo is on, click the photo and click Open.
Then, under that you should see a resizing button. I always have mine set up at 320x240, but there are other size options that you can explore. I never have though..
Then, you click 'Submit' and it should upload the photo and take you to the result. You can copy the thumb link to paste the photo as a 'thumbnail' which is a smaller sized photo that is clickable to view larger.
Or, you can copy the 'Image' link and paste it and it will show up as a larger full sized picture, depending on your resizing settings.
Also, if you have uploaded photos using the feature on here, to get to them whenever you want, click 'Uploads' again and at the bottom right of that page there is a 'My Uploads' Button that will take you to all of your photos that you have uploaded. There you have the option to delete them, copy links, etc.
For your avatar, to go Profile at the top of the page in the blue toolbar > Personality> Upload/Change Avatar> choose your photo and click open, then click Submit and it should show up!