Maybe someone else can try this and be successful and come up with a better write up.
This is what I did to change my avatar.
Have a picture saved somewhere so you know where it is, desktop, documents or some folder.
Go to Flicker.com, you'll probably have to register or create an account, not sure, but I did.
Flicker to me is kind of confusing but everything new is. It looks like a good site to organize photo's and share.
You might have to play around a bit as I was in a hurry when I did this and just managed to hit the right buttons.
I believe I clicked on or used camera roll first.
In the upper right corner in the black border is an icon of a funny looking cloud that has a triangle, that is the upload icon.
That is self explanatory after you click on it.
This is where I'm a little foggy, after the photo is uploaded:
After it is uploaded,
Click on the photo and "save as" (remember where it is saved to)
Log onto the apache web site> profile>forum profile.
And I "THINK" I chose specify avatar by url.
It might have been Upload an avatar. Pretty sure it was the first one though.
After you click on browse and the information is in the browse box for your photo hit enter on the keyboard.
It worked for me and I didn't have to resize it or anything, one of those computer mysteries.
( I'm not responsible for anything thrown through your monitor while trying to attempt this)
Roger