Topic: How can I make the Thumbs at the left larger???

Any ideas on how to make the small thumbs to the left larger??? To elaborate:

I have the gallery nested in a table inside an existing html page but I would like to make the small thumbs at the left larger.  I used the Photoshop gallery script to size all images and create the directory, then placed in my website directory. having said that Any ideas would be greatly appreciated???