@TheDoc.. yeah she was asking for the php code to insert her gravatar. To do that you must open the comments.php file and then study the code properly. Then you will find the comment’s loop and in that loop, where each comment is being displayed, there you will have to insert that if condition along with the function call to the gravtar.
As for the wufoo form, as doc said, you just need to paste the whole code [provided by wufoo] in the page where ever you want to display your contact form. Mostly, it would be a contact.php template or something similar to it :)
Everybody is a beginner one time or the other, you just need the passion and the determination to learn very fast :)
All the best.