Picture in my Profile

I am finally getting visitors. What a great feeling that is. Feel free to keep spreading the word about my site, sign my guestbook, and I will drop on over to yours. I am wondering if anyone could give me a detailed description on how to post my picture on my profile. I can't figure out that URL thing, it just makes no sense to me. Don't mistake this for a dumb-blonde cry for help though. I have done my research, but HTML is tricky yknow? I know that there has to be someone out there who can give me a push in the right direction.