I'd like to shorten my page menu bar so that it only extends to the length of my page buttons. Is this feasible? Anyone know how?

I'm wondering the exact same thing! I want the page and category menu bars to only be the same length as my left sidebar and the center column. I don't want it to extend to the right sidebar.

Put this in Athaulpa Theme Options as a CSS Insert:

div#menu1 {
margin-left: 200px;
margin-right: 200px;
}

Left shortens on the left, right cuts off from the right. Adjust the px values to achieve the look you desire.