I created an image by altering a photo. I want to move it from my computer into the BTS site so others can look at it, but I'm not sure how to "upload (?)" it. . . .

It's not particularly good; I did it with the windows paint utility.

Is this to be your avatar? if so, just open the Control Panel, click on Edit Profile, then go down to the avatar section and enter the image's url.

If the image isn't on a website I don't think it can be done. (You can add attachments to posts, though...)

Can anyone else help??