click on 'avatar- find the file w/ your pic- I put mine temp. on my desktop.
set your camera to small/TV size 600x400 or it will be too large.
If you want to do more when replying anywhere click 'Go Advance' where you have many more options--fonts -colors etc.
what is at the bottom of your posts is your 'sig' you can add links--list your lasers-other gear LPMs etc sometimes I need to load pics into 'my albums' where you can highlight/copy the URL and use that to move pic file into a post or messg.
let me know If I can help more