After moaning and groaning about how hard it was to upload a picture to a posting using the free "Hello" program (see my comment on one of the Feb postings), it turns out that that is the first step to getting a picture into your User Profile if you don't know any other way.
Step 2 is to edit the post that has the picture. Click "Blogger" in the top left corner of the page to go to the Dashboard. Click "Change Settings". Click the "Posting" tab. Click "Edit Posts". Find the name of the post that has the picture. Click the word "Edit" that is in front of that post. Then you click the "Edit HTML" tab and select the image source name they used. (It will look like
http://photos1.blogger.com/img/ and a whole bunch of other numbers and the name you gave the picture and more numbers and then ending with .jpg -for example my picture's img src is
http://photos1.blogger.com/img/67/3771/640/KabukiAndConnieOct2004%204X6.jpg )
Step 3 is to right-click that name and copy it.
Step 4 is to get to the form that asks you the URL name of the picture to put on your User Profile and paste that name in. (I used Ctrl V.)
Step 5 is to Save the settings. (You might need to Refresh your page to see the picture, but you will know immediately if it accepted that name because you get a big red error message at the top of the form if it didn't.)
Step 6, if it works, is to give thanks. (If it doesn't work, you probably have your own "Darn It" routine painfully established, but you will have to delete the URL to get rid of the Error message if you ever want to change anything else on that form and get it saved.)
(These directions may not be perfect, but they should give you the general idea. This is the answer that the Blogger support team sent me when I asked what the URL should be:
http://help.blogger.com/bin/answer.py?answer=776 )
I am leaving the post with the picture on the page even though I now have the picture on my User Profile as I have no idea what would happen if I deleted it. I sure don't want to go through all this again. (I guess additional postings will force the picture down the page or into the Archives or wherever. I figure this is the least of my problems.)