Help! Please!

       Two pleas for assistance...  I know I have a very slow learning curve.  I just realized yesterday, after looking at someone's blog and noting that they gave credit for the flickr photo they used, that I had been merrily adding images on my blog, failing each time to give credit to the artist. (I was proud of that accomplishment:  being able to browse for and then place the photo in my blog without a weirdly-placed white "frame."  I can't get rid of the frame yet, but at least it's centered around the picture now.)

      Here's where I need the help. 1) I love the comments. It's proof that someone's actually reading the drivel I write.  But I cannot figure out how to program a little note like "Thanks for your comment," by the place where comments are posted.  I've yahoo-ed it, to no avail. Could anyone tell me in simple, easy-to-understand steps?

2)  Check out Donna's blog  She is asking for movies about writing (which I would like to learn about as well. ) I know the movie Once (might be a stretch) and Stranger Than Fiction and Sideways (which I know is a stretch, and might be objectional to some).  But what others are there?