So I'm looking at the page there..probably the one you're looking at right now, and I noticed that there was a big blank space to the left of everything. "Well," I thought, "How can I get the text to stretch that far?" Then I remembered the Edit HTML link in the Layout tab.
Went into the Outer Wrapper of the CSS section and changed the width attribute in the #outer-wrapper from 660px to 860px. Then I changed the width in #main-wrapper from 410px to 610px. There. Now the text shifts over into that blank spot (due to the outer-wrapper) and stretches across to hit the sidebar (due to main-wrapper). I feel so smart now.