site design and trackback closure

I've used David Raynes: Closing comments on old entries script to hopefully close trackback on Kristen's blog and at the same time I have started to play with some css for some learning time before I roll out a new blog/site. She now has a header image and we've also changed some colours and fonts although you get the best effect if you have curlz mt font installed. I've got to look up how to embed the font into the webpage. I know it is possible but can't remember how to do it right now.