WTG Bill !!!!!!
For your avatar you can copy and paste in the HTML code from P/bucket into your Forum siggy in your account, but be warned, if you do that it creates a link to your p/bucket account. If you choose to do that make your P/bucket account private.
You can also use the Direct Link from P/bucket for your siggy. Thats what I use. The only catch is it must be used with some simple HTML to work.
This little code I put above, when used with the Direct Link from P/bucket will center your image in your siggy and does not create a link. Copy and paste this code into your siggy and then copy and paste the Direct Link into the code at the red * and remove the *. Here is an example of one I helped James with. Click here. Play with it, there`s lots of possibilities.